NASA SP-7011 (141) CASE F CO AEROSPACE MEDICINE AND BIOLOGY A CONTINUING BIBLIOGRAPHY WITH INDEXES (Supplement 141) MAY 1975 NATIONAL AERONAUTICS AND SPACE ADMINISTRATION https://ntrs.nasa.gov/search.jsp?R=19760003614 2020-03-22T19:38:34+00:00Z ACCESSION NUMBER RANGES Accession numbers cited in this Supplement fall within the following ranges: STAR(N-10000 Series) N75-15601—N75-17292 I AA(A-10000 Series) A75-19577—A75-22789 This bibliography was prepared by the NASA Scientific and Technical Information Facility operated for the National Aeronautics and Space Administration by Informatics Information Systems Company The Administrator of the National Aeronautics and Space Administration has determined that the publication of this periodical is necessary in the transaction of the public business required by law of this Agency. Use of funds for printing this periodical has been approved by the Director of the Office of Management and Budget through July 1, 1974 NASA SP-7011 (141) AEROSPACE MEDICINE AND BIOLOGY A CONTINUING BIBLIOGRAPHY WITH INDEXES (Supplement 141) A selection of annotated references to unclas- sified reports and journal articles that were introduced into the NASA scientific and tech- nical information system and announced in April 1975 in • Scientific and Technical Aerospace Reports (STAR) • International Aerospace Abstracts (IAA) Scientific and Technical Information Office NATIONAL AERONAUTICS AND SPACE MAY 1975 ADMINISTRATION Washington, D.C. 'A? NASA SP-7011 and its supplements are available from the National Technical Information Service (NTIS). Questions on the availability of the predecessor publications, Aerospace Medicine and Biology (Volumes I - XI) should be directed to NTIS. This Supplement is available from the National Technical Information Service (NTIS), Springfield, Virginia 22161 for $4 00 For copies mailed to addresses outside the United States, add $2 50 per copy for handling and postage INTRODUCTION This Supplement to Aerospace Medicine and Biology (NASA SP-7011) lists 267 reports, articles and other documents announced dur ing April 1975 in Scieniijic and Technical Aerospace Reports (STAR) or in International Aerospace Abstracts ( I A A ) The first issue of the bibliography was published in July 1964; since that time, monthly supplements have been issued In its subject coverage, Aerospace Medicine and Biology concentrates on the biological, physiological, psychological, and environmental effects to which man is subjected during and following simulated or actual flight in the earth's atmosphere or in interplanetary space References describing similar effects of biological organisms of lower order are also in- cluded. Such related topics as sanitary problems, pharmacology, toxicology, safety and sur- vival, life support systems, exobiology, and personnel factors receive appropriate attention In general, emphasis is placed on applied research, but references to fundamental studies and theoretical principles related to experimental development also qualify for inclusion Each entry in the bibliography consists of a bibliographic citation accompanied in most cases by an abstract The listing of the entries is arranged in two major sections IAA Entries and STAR Entries, in that order The citations, and abstracts when available, are reproduced exactly as they appeared originally in IA A or STAR, including the original accession numbers from the respective announcement journals. This procedure, which saves t ime and money, accounts for the slight variation in citation appearances Two indexes—subject and personal author—are included An annual index will be prepared at the end of the calendar year covering all documents listed in the 1975 Supplements. AVAILABILITY OF CITED PUBLICATIONS IAA ENTRIES (A75-10000 Series) All publications abstracted in this Section are available from the Technical Information Service. American Institute of Aeronautics and Astronautics. Inc (AIAA). as follows Paper copies are available at $5 00 per document up to a maximum of 20 pages The charge for each additional page is 25 cents Microfiche'" are available at the rate of $1 50 per microfiche for documents identified by the "ft" symbol following the accession number A number of publications, because of their special characteristics, are available only for reference in the AIAA Technical Information Service Library Minimum airmail postage to foreign countries is $100 Please refer to the accession number, eg (A75-10763), when requesting publications STAR ENTRIES (N75 10000 Series) One or more sources from which a document announced in STAR is available to the public is ordinarily given on the last line of the citation The most commonly indicated sources and their acronyms or abbreviations are listed below If the publication is available from a source other than those listed, the publisher and his address will be displayed on the availability line or in combination with the corporate source line Avail NTIS Sold by the National Technical Information Service to U S customers at the price shown in the citation following the letters HC (hard, paper, or facsimile copy) Customers outside the U S should add $2 50 per copy for handling and postage charges to the price shown (Prices shown in earlier STAR volumes. 1962-1974. have been superseded but may be calculated from the number of pages shown m the citation The price schedule by page count was given in the last STAR issue of 1974 or may be obtained from NTIS) Microfiche1 are available at a standard price of $2 25 (plus $1 50 for non-U S customers) regardless of age for those accessions followed by a "#" symbol Accession numbers followed by a "+" sign are not available as microfiche because of size or reproducibihty Initially distributed microfiche under the NTIS SRIM (Selected Research in Microfiche) is available at greatly reduced unit prices For this service and for information concerning subscription to NASA printed reports, consult the NTIS Subscription Unit NOTE ON ORDERING DOCUMENTS When ordering NASA publications (those followed by the "*" symbol), use the N accession number NASA patent applications (only the specifications are offered) should be ordered by the US-Patent-Appl-SN number Non-NASA publications (no asterisk) should be ordered by the AD. PB, or other report number shown on the last line of the citation, not by the N accession number It is also advisable to cite the title and other bibliographic identification Avail SOD (or GPO) Sold by the Superintendent of Documents. U S Government Printing Office in hard copy The current price and order number are given following the availability line (NTIS will fill microfiche requests, at the standard $2 25 price for those documents identified by a "#" symbol) (DA microfiche a a transparent sheet of film 105 by 148mm in size containing aa many as 60 to 98 pages of information reduced to micro images (Not to exceed 26 1 reduction) IV Avail NASA Public Document Rooms Documents so indicated may be examined at or purchased from the National Aeronautics and Space Administration. Public Documents Room (Room 126). 600 Independence Ave. SW, Washington, DC 20546, or public document rooms located at each of the NASA research centers, the NASA Space Technology Laboratories, and the NASA Pasadena Office at the Jet Propulsion Laboratory Avail ERDA Depository Libraries Organizations in U S cities and abroad that maintain collections of Energy Research and Development Administration reports, usually in microfiche form, are listed in Nuclear Science Abstracts Services available from the ERDA and its depositories are described in a booklet. Science Information Available from the Energy Research and Devopment Administration (TID-4550), which may be obtained without charge .from the ERDA Technical Information Center Avail Univ Microfilms Documents so indicated are dissertations selected from Dissertation Abstracts and are sold by University Microfilms as xerographic copy (HC) at $1000 each and microfilm at $400 each regardless of the length of the manuscript Handling and shipping charges are additional All requests should cite the author and the Order Number as they appear in the citation Avail USGS Originals of many reports from the U S Geological Survey, which may contain color illustrations, or otherwise may not have the quality of illustrations preserved in the microfiche or facsimile reproduction, may be examined by the public at the libraries of the USGS field offices whose addresses are listed in this Introduction The libraries may be queried concerning the availability of specific documents and the possible utilization of local copying services, such as color reproduction Avail HMSO. Publications of Her Majesty's Stationery Office are sold in the U S by Pendragon House, Inc (PHI), Redwood City, California The U S price (including a service and mailing charge) is given, or a conversion table may be obtained from PHI Avail BLL (formerly NLL) British Library Lending Division, Boston Spa, Wetherby. Yorkshire. England Photocopies available from this organization at the price shown (If none is given, inquiry should be addressed to the BLL) Avail ZLDI Sold by the Zentralstelle fur Luftfahrtdokumentation und -Information, Munich, Federal Republic of Germany, at the price shown in deutschmarks (DM) Avail Issuing Activity, or Corporate Author, or no indication of availability Inquiries as to the availability of these documents should be addressed to the organization shown in the citation as the corporate author of the document Avail U S Patent Office Sold by Commissioner of Patents, U S Patent Office, at the standard price of 50 cents each, postage free Other availabilities If the publication is available from a source other than the above, the publisher and his address will be displayed entirely on the availability line or in combination with the corporate author line IV SUBSCRIPTION AVAILABILITY This publication is available on subscription from the National Technical Information Service (NTIS) The annual subscription rate for the monthly supplements, excluding the annual cumulative index, is $18 75 domestic $23 50 foreign All questions relating to the subscriptions should be referred to NTIS ADDRESSES OF ORGANIZATIONS American Institute of Aeronautics and Astronautics Technical Information Service 750 Third Ave New York. NY 10017 British Library Lending Division, Boston Spa, Wetherby, Yorkshire, England Commissioner of Patents U S Patent Office Washington, D C 20231 Energy Research and Development Administration Technical Information Center P 0 Box 62 Oak Ridge. Tennessee 37830 ESRO/ELDO Space Documentation Service European Space Research Organization 114, av Charles de Gaulle 92-Neuilly-sur-Seme, France Pendragon House, Inc 899 Broadway Avenue Redwood City, California 94063 Superintendent of Documents U S Government Printing Office Washington. D C 20402 University Microfilms A Xerox Company 300 North Zeeb Road Ann Arbor, Michigan 48106 University Microfilms, Ltd Tylers Green London, England U S Geological Survey 1033 General Services Administration Bldg Washington, D C 20242 Her Majesty's Stationery Office P 0 Box 569. S E 1 London, England U S Geological Survey 601 E Cedar Avenue Flagstaff. Arizona 86002 NASA Scientific and Technical Information Facility PO Box 8757 BWI Airport. Maryland 21240 National Aeronautics and Space Administration Scientific and Technical Information Office (KSI) Washington. D C 20546 National Technical Information Service Springfield. Virginia 22161 U S Geological Survey 345 Middlefield Road Menlo Park. California 94025 U S Geological Survey Bldg 25, Denver Federal Center Denver, Colorado 80225 Zentralstelle fur Luftfahrtdoku- mentation und -Information 8 Munchen 86 Postfach 880 Federal Republic of Germany VII TABLE OF CONTENTS Page IAA Entries (A75-10000) 103 STAR Entries (N75-10000) 125 Subject Index Personal Author Index 1-1 I 27 T Y P I C A L CITATION AND A B S T R A C T FROM STAR NASA SPONSORED- OOCUMENT NASA ACCESSION TITLE-I JAUTHOR CONTRACT- OR GRANT REPORT - NUMBER »• N75-10689*# Scientific Translation Service Santa Barbara Calif- NUMBERTHE DEPENDENCE OF REACTION TIMES ON THE -LOCATION OF THE STIMULUS - f-G S Hall Washington NASA Oct 1974 16 p refs Transl into ENGLISH from Arch Anatomie Physiol (West Germany) 1879 p 1-10 -(Contract NASw-2483) p -(NASA-TT-F-16001) Avail NTIS HC $3 25 CSCL 06P- Reaction times to stimuli were measured using simple apparatus in the upper arm index finger and retina It is found that reduced reaction times are not noticeably different for various parts of the body In the case of the eye the reaction times are similar to other functions Therefore, the reaction method cannot be used to determine the sensible and motor conduction velocity and at the present time, the conduction velocity in the long paths of the spine are unknown Author -AVAILABLE ON MICROFICHE I I -CORPORATE SOURCE PUBLICATION DATE AVAILABILITY SOURCE -COSATI CODE T Y P I C A L C I T A T I O N AND A B S T R A C T FROM' IAA MAftA SPONSORSHIP AIAA • ACCESSION NUMBER PERIODICAL 1 - A75-12823 * —Brain stem auditory evoked responses in human infants and adults K Hecox and R GaTambos (California,-*— University, La Jolla, Calif ) Archives of Otolaryngology, vol 99, Jan •*- 1974, p 30-33 17 refs Research supported by the Sloan Founda- tion Grants No PHS-NS 10482 01 No NGR-05 OOO'IOS-* • -i Brain stem evoked potentials were recorded by conventional scalp electrodes in infants (3 weeks to 3 years of age) and adults The latency of one of the major response components (wave V) is shown to be a function both of click intensity and the age of the subject this latency at a given signal strength shortens postnatally to reach the adult value (about 6 msec) by 12 to 18 months of age The demonstrated reliability and limited variability of these brain stem electrophysiological responses provide the basis for an optimistic estimate of their usefulness as an objective method for assessing hearing in infants and adults (Author) *iiTn/\n — , I LAUTHOR'S AFFILIATION L- PUBLICATION DATE CONTRACT. GRANT. OR SPONSORSHIP VIII AEROSPACE MEDICINE AND BIOLOGY A Continuing Bibliography (Suppl. 141) MAY 1975 IAA ENTRIES A75-19676 Human Factors Society, Annual Meeting, 18th, Huntsville, Ala . October 15-17, 1974, Proceedings Edited by E L Saenger and M Kirkpatrick, III (Essex Corp , Huntsville, Ala ) Santa Monica, Calif, Human Factors Society, 1974 657 p Members, $10 00, nonmembers, $15 Topics discussed include the use of aircraft simulators in man-machine interface research and crew training, a new methodo- logical technique for measuring individual differences in basic attention capabilities, the disturbed-attitude tracking performance of experienced pilots using a frequency-separated display, the use of pattern and motion cues for the enhancement of detection rates in a visual search for linear target patterns embedded in static noise, the effect of scene rotation on the target acquisition performance of an airborne observer, the development of boarding-gate and m-flight defenses against aircraft hijacking, a model for predicting an individual's cardiac response to a series of fixed-intensity tasks, an evaluation of the efficiency of manually controlled helicopter control-display systems, an integrated control and display station configuration concept for operating a remote teleoperator spacecraft, the use of spectral power density shifts on electromyograms to measure muscle fatigue, and a description of the simultaneous paths of movement of a large number of body landmarks of a pilot performing upper-limb motions A 8 K. A75-19677 How much should you pay for that box C O Hopkins In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p I-VI 33 refs The issue of prices for simulators is reported How much should be paid depends on the purpose in and method of using the simulator, these factors establish the necessary features which in turn determine cost and training effectiveness Cost effectiveness has not been demonstrated for all the standard trimmings on current simulators, and a simulator should not cost several times as much as its counterpart airplane The uses of simulators most directly related to human factors are man-machine interface research and crew training The cost, safety, efficiency and effectiveness advantages of simulators are briefly presented Two other important applications of simulators are predicting future success in training (selection) and evaluating current effects of past training (proficiency assessment) Topics treated under cost effectiveness of simulators are effectiveness as a function of training procedures, physical stimulation vs psychological stimulation, simulator fidelity and motivation, and simulator fidelity and pilot acceptance The incremental transfer effectiveness ratio is employed as a measure of cost effectiveness Motion and visual systems are the areas in which the most extensive engineering development is being done to increase the fidelity of physical stimulation S J M A75-19678 Basic attention measures at predictor! of success in flight training. R A North and D Gopher (Illinois, .University, Urbana, III ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 50-56 9 refs Contract No F44620-70-C-0105 A two-stage study was conducted to assess the potential of a new methodological technique for measuring individual differences in basic attention capabilities and the validity of these differences in predicting success in flight training A performance testing system included a digit-processing reaction-time task and a one-dimensional compensatory tracking task Comparisons were made between seaprate and concurrent performances of these tasks, and simulta- neous performances also included comparisons involving changes in task priorities Results indicating consistent individual differences in basic attention capabilities suggest several dimensions for their description A preliminary validation study compared scores for a group of 11 flight instructors and with a group of 32 student pilots In addition, the student sample was dichotomized based on performance in training There were reliable differences for both groups on combined task performance efficiency (Author) A75-19679 Development of a training model for naval flight students. R H Shannon (U S Navy, Naval Aerospace Medical Research Laboratory, Pensacola, Fla ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif., Human Factors Society, 1974, p 57-60 9 refs A model is outlined that separates complex or total task maneuvers into simple or component parts The method consists of maneuver descriptions, critical error isolation, commonality analyses, and inflight/simulator scenarios Results indicate that the scenarios involving continuous aircraft control during climbs, descents, turns, and straight and level flight and the two discrete task sequences during dirty configuration entry and preparation for break/break turn are highly effective training techniques S J M A75-19680 The transition of experienced pilots to a frequency-separated aircraft attitude display - A flight experiment. D B. Bermger, C Williges, and S N Roscoe (Illinois, University, Urbana, III ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 62-70 14 refs Navy-sponsored research Twenty-four experienced pilots were given one flight in a Link GAT-2 simulator and one flight in a Beechcraft C-45H using either the moving horizon, moving airplane, or frequency-separated attitude display The flight tasks performed by the subjects included recovery from unknown attitudes, disturbed attitude tracking, and completion of an area navigation course Data collected in the C-45H aircraft demonstrated superior performance of both the frequency-separated and moving horizon displays when compared to the moving airplane display during unknown attitude recoveries The frequency-separated display was superior to all others during disturbed-attitude tracking It was concluded that the flight performance of experienced pilots during their initial transition to a frequency-separated flight attitude presentation is at least comparable and possibly superior to their flight performance with the conventional moving horizon presenta- tion (Author) A75-19681 Pattern and motion characteristics of visually time-compressed target detection in static noise. J D Moll and R C. Williges (Illinois, University, Urbana, III ) In Human Factors 103 A75-19682 Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 139-145 12refs Contract No F44620-70-C-0105 An experiment was performed testing different pattern and motion cues for enhancement of detection rates in visual search for linear target patterns imbedded in heavy static noise Eight subjects participated in a factorial, within-subject design which included the number of spots in the target pattern, the rate of advancement of the target pattern on the display, the successive spot duration in the target patterns, and the mterspot distance for successive spots in the target pattern Time required to detect and designate targets was used as the dependent variable Displays were presented via a computer-controlled plasma panel equipped with a touch-sensing device for target pattern designation Analyses of the data revealed that both the rate of advancement of the target pattern and the spot duration were important factors for facilitating rapid detection of targets when spatial definition was poor, but such cues were less critical when spatial definition of the targets was enhanced Results were discussed in terms of the relationship among pattern and motion cues in the target detection task (Author) A75-19682 The effect of scene rotation on target acquisi- tion M Freitag (Martin Marietta Aerospace, Orlando, Fla ) and S MacLeod (USAF, Aerospace Medical Research Laboratory, Wright- Patterson AFB, Ohio) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 146-152 6 refs. Studies were performed to determine the effects of scene rotation on target acquisition performance Video tapes of simulated straight approaches to surface vehicular targets were made at constant offset, altitude, and speed using a terrain table (600 1) and a gimbal mounted TV camera Detection and (separate) recognition tests were then made under load (button-pushing) and no-load conditions No differences in detection slant range and erroneous detections were found between the rotated (roll-pitch) and non- rotated (yaw-pitch gimbal order) conditions or between the load/no- load conditions Statistically significant differences were found between the recognition ranges and error scores for gimbal order but again not between load/no-load conditions It was concluded that the sensor line of sight should be stabilized or derolled if maximum recognition performance is to be realized using airborne electro- optical systems in ground target acquisition (Author) A75-19683 The effects of certain gimbal orders and workloads on target acquisition. D L. Price (Virginia Polytechnic Institute and State University, Blacksburg, Va ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p. 153-157 7 refs Eighteen experienced pilots were tested on target detection, recognition and identification performance with respect to the relative influences of roll-pitch, yaw-pitch and pitch-yaw gimbal orders on this performance Tests consisted of a target task, words task, numbers task, and words and targets task Pitch-yaw gimbal order was found to have a favorable effect by reducing target task workload and improving target task performance score S J M A75-19684 Color and texture differences in embedded target visual search situation!. J R Bloomfield (Honeywell Systems and Research Center, Minneapolis, Minn ), H H Marmurek, and B. G Traub (Ohio State University, Columbus, Ohio) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 158-170 12 refs Army-supported re- search. Experimental study of the effectiveness of visual searches for targets of various textures embedded in color and monochrome displays Simple equations developed to describe competition search situations were tested against the data obtained in complex search backgrounds Additional experiments were performed in order to obtain measures of peripheral acuity and ratings of the discrimi- nabihty of the various targets from the two backgrounds Using these data, it was found that the equations did not provide a good description for the monochrome display, although a good fit was obtained with the color background A B K. A75-19686 Large Space Telescope and human factors H. T Fisher (Lockheed Missiles and Space Co , Inc , Sunnyvale, Calif ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala , October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p~ 176-186 The Large Space Telescope (LST) will be designed with on-orbit maintenance by suited astronauts using extravehicular activity as the principal maintenance mode For maintenance, the LST will be soft berthed to the Space Shuttle Orbiter, and a spares pallet and work platform will be utilized Design studies included 1-g and neutral buoyancy simulations with mockups of the Scientific Instruments (SI) and Support Systems Module (SSM) A 3 81 meter internal diameter was chosen for the SSM for compatibility with the SI and Optical Telescope Assembly (OTA) A modular approach to SSM/SI equipment design was chosen Crew work and support aids and modes of equipment transfer were studied The relative costs of various maintenance modes are compared Simulations have allowed the development of detailed orbital crew maintenance tasks and associated timelines ATS A75-19687 Prediction of cardiac response to physical stress L E Long and L L Hoag (Oklahoma, University, Norman, Okla ) In Human Factors Society, Annual Meeting, 18th, Hunts- ville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 225-227 This paper presents a method for predicting an individual's cardiac response to a series of fixed intensity tasks It was determined that cardiac responses to exercise at given work loads are similar for -subjects of the same sex and level of physical fitness when they are expressed in terms of resting heart rate Using this observation as a basis, a prediction model was developed by extrapolating from empencally derived heart rate patterns The prediction error was no more than five to ten percent of the actual heart rate value m ninety percent of the predictions (Author) A75-19688 Effects of time, rate of information presenta- tion and physical threat stress on perceptual-motor performance. J M Owens, R S Gibson, and S D Harris (U S Navy, Naval Aerospace Medical Research Laboratory, Pensacola, Fla ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 241-243 8 refs A75-19689 Navigation and flight proficiency under Nap of the Earth conditions as a function of aviator training and experience M L. Fmeberg (U.S Army, Army Research Institute for the Behavioral and Social Sciences, Washington, DC) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala , October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 249-254 7 refs Nap-of-the-Earth (NOE) flight involves a flight at treetop level and below The new tactic uses existing terrain features to mask the aircraft from enemy radar and optical detection It is pointed out that the introduction of NOE tactics presents special difficulties to Army rotary wing aviators, particularly in navigation These difficul- ties are to be overcome by appropriate NOE training In connection with this objective an investigation was conducted involving 14 helicopter pilots who had completed a preliminary course of instruction in NOE flight. G R 104 A75-19700 A75-19693 * Evaluation of localized muscle fatigue using power spectral density analysis of the electromyogram E V LaFevers (NASA, Johnson Space Center, Houston, Tex ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala , October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 278-283 15refs Surface electromyograms (EMGs) taken from three upper torso muscles during a push pull task were analyzed by a power spectral density technique to determine the operational feasibility of the technique for identifying changes in the EMGs resulting from muscular fatigue The EMGs were taken from four subjects under two conditions (1) in shirtsleeves and (2) in a pressurized space suit This study confirmed that frequency analysis of dynamic muscle activity is capable of providing reliable data for many industrial applications where fatigue may be of practical interest The results showed significant effects of the pressurized space suit on the pattern of shirtsleeve fatigue responses of the muscles The data also revealed (1) reliable differences between muscles in fatigue-induced responses to various locations in the reach envelope at which the subjects were required to perform the push-pull exercise and (2) the differential sensitivity of muscles to the various reach positions in terms of fatigue-related shifts in EMG power (Author) A75-19694 Paths of movement of body members in aircraft cockpits S Deivanayagam, M M Ayoub (Texas Tech University, Lubbock, Tex ), and K W Kennedy (USAF, Aerospace Medical Research Laboratory, Wright-Patterson AFB, Ohio) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 284-286 5 refs Contract No F33615-73-C-4073 This paper describes an effort to study the simultaneous motion trajectories of a large number of human body landmarks of a pilot during upper limb motions typical of those necessary to fly an aircraft The objective is to gather engineering anthropometric data necessary, from a human engineering point of view, in the design of aircraft cockpits and other similar manned work stations. Twenty subjects participated in an experiment conducted to record the movements A photographic procedure combining slow speed motion picture and interrupted light photography was employed to record the movements This paper describes the procedure and also presents a set of typical paths of movement obtained through such recording Also mentioned are some of the preliminary findings regarding the motion characteristics of parts of the human body (Author) A75-19695 Where is the system in the man-machine system D Meister (U S Army, Army Research Institute for the Behavioral and Social Sciences, Arlington, Va ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 287-292 16 refs Implications of the man-machine concept for Human Factors as a discipline are derived Two fundamental research questions stem from this assumption Are psychological principles describing individual and group behavior sufficient to explain operator and multiman-machine system operations, and, what is the relationship between individual responses and system outputs Review of the Human Factors literature indicates that most studies ignore the system and fail to answer these questions Reasons for and consequences of this failure are explored (Author) A75-19696 The ten commandments for organizational effectiveness S 0 Parsons (Lockheed Missiles and Space Co , Inc, Sunnyvale, Calf ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15^17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 325-332 14 refs The role of the human factors specialist in designing organiza- tions for people vs designing equipment for people is discussed Ten principles for organizational behavior are presented which maximize the human resources along with examples and quantitative data based upon Lockheed experience and other industrial applications Particular emphasis is devoted to TEAM, a worker participation program initiated six years ago at Lockheed and still evolving in form. Upward Performance Evaluation results, and new communica- tion techniques (Author) A75-19697 Human factors engineering test and evaluation technology E L Holsbouser (U S Navy, Naval Missile Center, Point Mugu, Calif) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 343-349. 5 refs. Department of Defense (DOD) Directive 50001 of 13 July 1971 provides direction for Test and Evaluation (T&E) of major weapon systems In addition, there are Navy unique T&E requirements which must be satisfied A Human Factors Engineering (HFE) test and evaluation concept has been proposed for implemen- tation by the Naval Air Systems Command The proposed T&E concept will make explicit the interface among the test and evaluation activities so that the role of HFE can be realistically implemented and managed during system acquisition. The HFE T & E concept will specifically address the developmental and operational tests designed to provide HFE data for answering the Defense System Acquisition Review Council (DSARC) milestones for evolving sys- tems. The concept also features an HFE information system which will serve as a focal point and feedback network for use by personnel needing information or data on some element in the evaluation of a particular weapon system (Author) A75-19698 A computer aided function allocation and evaluation system /CAFES/. C W Hutchms (U.S Naval Material Command, Naval Air Development Center, Warmmster, Pa ). In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala., October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 350-353 The Computer Aided Function Allocation and Evaluation System (CAFES) is a crew systems design support tool based on human engineering methodology, computer aids, human perfor- mance data and a data management system. It is intended to support crew systems engineers in man-machine research, requirements analysis, design, test, training and maintenance systems development The system of computer models comprising the CAFES system parallels the system development cycle and provides the required level of detail consistent with a given stage of system development The principle objectives of the present development program are to facilitate timely application of all essential elements of human factors technology in systems development, using automatic data processing techniques for rapid analysis and evaluation of crew subsystem performance as it effects total systems effectiveness. (Author) A75-19699 Computer-aided generation of performance measures for man-machine systems E M Connelly (Omnemn, Inc , Springfield, Va ), P A Knoop (USAF, Human Resources Labora- tory, Wright-Patterson AFB, Ohio), F J Bourne, and D G Loental (Quest Research Corp , McLean, Va ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 359-367 Contract No F33615-72-C-2094 The computer-aided system is characterized by a logical division of human and computer processor functions, an experi- mental approach to deriving measures by a priori definition of a measure population, and a systematic empirical approach to valida- tion testing Measure types generated and tested are absolute, relative and state transfer The processor performs all functions required to transform raw operator performance data into candidate measures SJM A75-19700 Design Option Decision Tree - A method for schematic analysis of a design problem and integration of human 105 A75-19701 factors data W B Askren (USAF, Human Resources Laboratory, Wright-Patterson AFB, Ohio) and K. D Korkan (Systems Research Laboratories, Inc, Dayton, Ohio) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974. Santa Monica, Calif , Human Factors Society, 1974, H 368-375 Contracts No F33615-70-C-1440, No F33615-73-C-4044 A Design Option Decision Tree (DODT) is a graphic means of showing the design options available at each decision point in the design process Several examples of DODTs for aircraft design problems are shown The procedures for developing a DODT are described A proposed method for use of the DODT to resolve a design problem is presented This method includes evaluating the design options in the Tree for impact on the system, and tracing paths through the Tree as dictated by specific design goals The use of human factors data as one of the evaluation parameters is illustrated The paper concludes with a discussion of other uses of a DODT (Author) A75-19701 The accommodated proportion of a potential user population - Compilation and comparisons of methods for estimation. A C. Bittner, Jr and W F Moroney (U S Navy, Naval Missile Center, Point Mugu, Calif) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 376-381 14refs Attention is given to conclusions reached by Moroney and Smith (1972) who found that a design of workspaces without awareness of the interaction between anthropometric variables ultimately leads to a considerable reduction in the size of the accommodated population The available methods for calculating the accommodated proportion are examined. Questions of method selection are considered along with prospects for future develop- ments and problems concerning data requirements G R A75-19/U2 Comparing adjectival and nonadjectival rating scale responses against performance criteria W R Helm (U S. Navy, Naval Air Test Center, Patuxent River, Md ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 382-386 Twenty-one student naval test pilots participated in a dual task experiment for the purpose of comparing the utility of adjectival and nonadjectival rating scales Modified versions of the Cooper-Harper and McDonnell pilot rating scales were compared with the non- ordinal, nonadjectival rating scale developed by Schufeldt The primary task was a serially presented four-choice discrimination task with three levels of presentation rate The secondary task was verbal requiring short term and long term memory dependent responses Analyzing task demands in bits of information processed per second, provided a comparison of S's potential information processing load with his actual performance and subjective ratings Results do not provide support for the superiority of any one rating scale in reflecting S's actual performance (Author) A75-19703 Target detection assessment using an orthogo- nal mixed-factor central-composite design L A Scanlan and C Clark (Illinois, University, Urbana, III ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 406-413 25 refs Contract No F44620-70-C-0105 Target detection performance on a time-compressed radar display with both spatial and temporal cues was investigated The effects of six variables (frame duration, noise level, clutter level, number of stored frames, target speed, and target direction) were examined using an orthogonal mixed-factor central-composite response surface experimental design Results are discussed in terms of the contributions of spatial and temporal cues to detection performance A methodological discussion of the experimental design is also included (Author) A75-19704 Electromyography in dynamic muscular load- ing T M Khalil (Miami, University, Coral Gables, Fla ) and J E Otero (Southern Bell, Fort Lauderdale, Fla ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala , October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 414-417 5 refs NSF Grant No GK-37024X This paper discusses two experiments conducted to determine some of the various effects of dynamic muscular loading upon the Total Integrated Muscular Activity (TIMA) Parameters of interest are power, time, rate, and task. In one experiment the dynamic loading of muscles was applied through a cranking operation and in another experiment it was applied through a continuous push-up task Power, time and rate had a significant effect upon TIMA The conditions under which TIMA is minimized were determined for the two experiments (Author) A75-19705 A theoretical and empirical comparison of two mixed-factor central-composite designs. C Clark (Illinois, University, Urbana, III) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 418-424 13 refs This paper provides a brief review of the application of Central-Composite Designs (CCD) in human performance research Particular mention is made of the mixed-factor CCD, which allows simultaneous consideration of within-subject and between-subjects factors The current paper details the construction of two alternative versions of such a design After the two versions have been compared on theoretical grounds, an empirical investigation is proposed to determine the relative predictive accuracy and validity of prediction equations derived from data collected in accordance with each design version (Author) A75-19706 Instructional system design for aircrew train- ing S L. Johnson, R C Sugarman (Calspan Corp, Buffalo, N Y ) , and C C Buckenmaier, Jr (USAF, Systems Command, Wright- Patterson AFB, Ohio) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 452-455 17 refs Contract No F33657-75-C-0021 Questions of instructional system development (ISD) method- ology are considered and attention is given to the initiation cue-action verb-control-completion cue In addition to the basic task element description, supplemental information is necessary for the translation of the task data into behavioral objectives It is pointed out that the ISD methodology has had a major impact on the training programs of both military and commercial aviation G R. A75-19707 Systems approach to training /SAT/ for the B-1 aircrew. R C Sugarman, S L Johnson (Calspan Corp , Buffalo, NY) , and C C Buckenmaier, Jr (USAF, Systems Command, Wright-Patterson AFB, Ohio) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 456-458 Contract No F33657-75-C-0021 A training system is presented that takes into account the developmental status of the B-1 strategic bomber Program objectives include transition, upgrade, and recurring Basic problem areas such as biases and traditions, breadth of content, and overspecif ication of hardware will be quickly dispatched by the instructional systems development approach Remaining problems due to the fact that the B-1 is not yet operational will be minimized by a computer-aided Sorting Program and Training Resources Analytical Model, supple- mented with catalogs of data'which may be updated as the state of knowledge and the B-1 technical specifications evolve S J M A75-19708 Effect of environmental extremes on task performance time F W Trabold, Jr and D B Jones (Martin 106 A75-19720 Marietta Aerospace, Orlando, Fla ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 465-470 In the investigation reported subjects, trained in a shirtsleeve environment, performed the same simulated tasks under adverse environments Significant increases in completion times were ob- served in 10 of the 15 tests The tests most adversely affected were those requiring the greatest manual dexterity Mean differences in task performance time related to environmental factors are shown in a number of graphs G R A75-19709 The effects of verbal interference on psy- chomotor performance under dual task conditions. W R Helm, R P Fishburne, Jr, and W L Waag (U S Navy, Naval Air Test Center, Patuxent River, Md ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 471-475 6 refs Two experiments were performed in order to determine S's maximum information processing capacity under dual task condi- tions and to provide empirical evidence regarding the localization of the divided attention effect The measurement of psychomotor performance (primary task) was obtained by using the Response Analysis Tester (RATER) Verbal interference (secondary task) was composed of three tasks requiring varying degrees of monitoring, short term memory and long term memory The results suggest performance on the primary task to deteriorate as a joint function of both primary and secondary task processing loads These data provide support to the locus of interference to be within the control processing (memory-dependent) and to response selection stages of the processing system The possibility of a limited dual channel capacity is discussed (Author) A75-19710 The measurement of attention capacity through concurrent task performance with individual difficulty levels and shifting priorities D Gopher and R A North (Illinois, University, Urbana, III ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 480-485 12 refs Contract No F44620-70-C-0105 A75-19711 * Optical range and range rate estimation for teleoperator systems N L Shields, Jr, M Kirkpatrick, III (Essex Corp., Huntsville, Ala ), T 6 Malone (Essex Corp , Alexandria, Va ), and C T Huggms (NASA, Marshall Space Flight Center, Huntsville, Ala) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala , October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 487-492 Range and range rate are crucial parameters which must be available to the operator during remote controlled orbital docking operations A method was developed for the estimation of both these parameters using an aided television system An experiment was performed to determine the human operator's capability to measure displayed image size using a fixed reticle or movable cursor as the television aid The movable cursor was found to yield mean image size estimation errors on the order of 2 3 per cent of the correct value. This error rate was significantly lower than that for the fixed reticle Performance using the movable cursor was found to be less sensitive to signal-to-noise ratio variation than was that for the fixed reticle. The mean image size estimation errors for the movable cursor correspond to an error of approximately 2 25 per cent in range suggesting that the system has some merit Determining the accuracy of range rate estimation using a rate controlled cursor will require further experimentation (Author) A75-19712 * A manipulator system designed for Free- Flying Teleoperator Spacecraft. J R Tewell, R A. Spencer, and J J Lazar (Martin Marietta Aerospace, Denver, Colo). In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala , October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 493-497 5 refs Contract No NAS8- 30266. A preliminary design of a manipulator system, applicable to a Free-Flying Teleoperator Spacecraft operating in conjunction with the Shuttle or Tug, is presented The manipulator arm incorporates two 4-ft segments to the wrist with actuators located at the shoulder, elbow, and wrist. The wrist provides three degrees-of-freedom through pitch, yaw and continuous roll joints An interchangeable end effector provides multiple task performance and satellite worksite versatility A tip force of 10 Ibs and a torque of 15 ft-lbs is provided Man-m-the-loop simulations, using both unilateral and bilateral control techniques, were conducted Based upon the simulation, a new, but relatively simple, control technique was proposed for the manipulator system. (Author) A75-19713* Man machine interactive imaging and data processing using high speed digital mass storage H Alsberg and R Nathan (California Institute of Technology, Jet Propulsion Labora- tory, Pasadena, Calif ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 498-505 13 refs Contract No NAS7-100, Grant No NIH-RR-00443 Attention is given to general questions regarding television systems, aspects of image distortion in TV systems, approaches of image restoration, noise limitations, and the digital image integrator The digital image recorder has been built around a high-speed digital memory system It is shown that television systems can be us<>d to augment man s capabilities in the control loop of remote manipula- tion systems G R A75 19714 A hierarchical concept for man-machine com- munication. J, S Albus, J M Evans, and E G Johnsen (National Bureau of Standards, Washington, D C ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 506-509 According to the concept considered, a hierarchy of control functions is involved in the control of a machine A human operator may enter this control hierarchy at any level, for direct control, for programming, or for recording control signals for later playback Various control techniques are discussed Memory-driven control systems are examined, giving particular attention to the Cerebellar Model Articulation Controller G R. A75-19715 Prediction of target detection thresholds on the basis of physiological considerations A Bernstein (Ford Auto- motive Safety Research Center, Dearborn, Mich ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 547-552 7 refs A target detection model which treats the retina as a system of interconnected components is presented The model has integrated psychophysical target detection thresholds The sensitivity and threshold parameters used in the model may be used as human performance measures The equations for liminal target brightness along with the regression equations for the model's threshold and sensitivity parameters have immediate engineering applications G R A75-19720 Human factors engineering aspects of satellite communication systems J W Kuhr and L W Tobias (Collins Radio Co, Cedar Rapids, Iowa) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala. October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 604-623 15 refs Treatment of human factors engineering (HFE) constraints on the Air Force Satellite Communications System (AFSATCOM) development program Material is exposited within the framework of the system development sequence predesign, detail design, produc- 107 A75-19721 tion, and design verification, with emphasis on the first two categories Predesign is covered with respect to background, system requirement definition, and functional analysis, detail design com- prises mainly panel planning, workspace layout, maintainability, and safety The uniqueness of the satcom system relative to other large communications systems extensively involving the man-machine relationship lies in three areas digital data transmission, computer assistance, and the possibility of good HFE with off-the-shelf components or new state-of-the-art designs The first two areas indicate a need for further development due to increasing operator data load, the third shows that the HFE must be cognizant of hardware potentialities in order to assist in designing efficient, cost-effective systems This description of system development provides an up-to-date case study of HFE problems in a military procurement setting and will prove instructive to those who are developing similar systems S J M A75-19721 Effects of lens color on target visibility for air-sea rescue S MacLeod, R L Hilgendorf, and R G Searle (USAF, Aerospace Medical Research Laboratory, Wright-Patterson AFB, Ohio) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif , Human Factors Society, 1974, p 624-627 18 refs A simulated rescue operation terrain model under low daylight with artificial haze was employed to evaluate target acquisition performance using the naked eye and four lenses Hazemaster (yellow), Oakley Doc (pink), Cosmetan (brown), and N-15 (gray) Performance measures were response time and number of targets found The unaided eye was superior to all viewing circumstances, with Oakley Doc the best and Cosmetan the worst of the lenses These results indicate that supposed enhancement properties of colored lenses are offset by losses due to their absorption of light SJM A75-19722 Human factors role in equipment definition and facility layout for the Space Computational Center and the NORAD Computer System Improvement Program. J H Van Arsdel, Sr (System Development Corp, Colorado Springs, Colo ) In Human Factors Society, Annual Meeting, 18th, Huntsville, Ala, October 15-17, 1974 Santa Monica, Calif, Human Factors Society, 1974, p 634-640 5 refs A75-199SO Intersensory generalization and conditioning in adaptation to visual tilt. H H Mikaehan (Georgia, University, Athens, Ga ) American Journal of Psychology, vol 87, Mar -June 1974, p 197-202 11 refs Contract No N00014-72-C-0124 Three measures of adaptation were taken at half-hour intervals over two hours of exposure to a 20-deg counterclockwise prismatic tilt a test of the visual vertical with goggles on (cue conditioning), one with goggles off, and a test of the propnoceptive vertical The visual aftereffects measured with the goggles did not differ from those measured without Significant propnoceptive changes and visual aftereffects occurred early in exposure, but the visual ones continued to grow with prolonged exposure while the propnoceptive ones did not (Author) A75-20006 # The significance of the commiisural system of the brain in lateralization of sleep and wakefulness (Znacheme komissural'noi sistemy mozga v lateralizatsn ina i bodrttvovanna). R. S. Rizhmashvih and V. M. Mosidze (Akademna Nauk Gruzmskoi SSR, Institut Fiziologn, Tiflis, Georgian SSR). Akademna Nauk Gruzlnskoi SSR, Soobshcheniia, vol. 76, Nov. 1974, p 441-443. In Russian. Consideration of the role of the brain commissures in lateraliza- tion of sleep and wakefulness following hemisection of the brain stem Hemisections were performed on two groups of cats - one with intact commissural systems and one which had previously been commissurotomized. The background electrical activity during sleep and wakefulness was studied in each group. It is found that in animals with a split brain (i e, the commissurotomized animals) subjected to unilateral impairment of the stem structures a prolonged lateralization of sleep and wakefulness occurs. The data obtained indicate that the commissural system plays an important role in the bilateralization of synchronized activity caused by hemisection of the brain stem A B.K A75-20007 tt Cardiodynamics of athletes performing muscu- lar work (Kardiodinamika u sportsmenov pn myshechnoi rabote). R. A Svamshvili (Tbihsskii Gosudarstvennyi Meditsmskn Institut, Tiflis, Georgian SSR) Akademna Nauk Gruzmskoi SSR, Soobshcheniia, vol 76, Nov 1974, p 449-451 8 refs In Russian Results of an analysis of the shirts in the cardiac activity parameters of trained athletes undergoing muscular exertion while exercising on a veloergometer in three different load ranges It is found that with an increase in the level of muscular exertion the cardiodynamic indices of trained athletes are adequately modified It is concluded that a study of the cardiodynamics of athletes engages in muscular activity makes it possible to obtain an idea of the relation between changes in the phase structure of the heart contraction and the volume of muscular activity performed A B.K. A75-20087 # Vibrations of the banlar membrane of the cochlea (0 kolebannakh baziharnoi membrany ulitki ukha). L A Ostrovskn and A M Sutm (Nauchno-lssledovatel'skn Radiofizi- cheskn Institut, Gorki, USSR). Akusticheskii Zhumal, vol 20, Nov.-Dec 1974, p 874-880 14 refs In Russian Solution of the hydrodynamic equations of the cochlea is given It is shown that in the region of maximum displacement amplitude of the basilar membrane, the Wentzel-Kramers-Brilloum approxima- tion is valid The solution is obtained in analytic form and is applicable in the whole range of audible frequencies and in the ultrasonic region In the low-frequency range, it agrees with Bekeshi's (1963) findings PTH A75-20122 Effect of sampling procedure upon the perfor- mance of an electrical model of auditory detection A D. Gaston, Jr and L A Jeffress (Texas, University, Austin, Tex ). Acoustical Society of America, Journal, vol 56, Dec 1974, p 1815-1817 11 refs Navy-PHS-supported research Data for an electrical model of auditory detection were obtained using two different methods of sampling One used as the sample the voltage at the termination of the signal, the other selected the largest amplitude peak that occurred during the observation interval Results showed that while detection performance for the end-of-signal samples plateaued at about 200 msec and showed no further improvement with duration, detection based on peak samples showed continued improvement in performance out to 2 sec It is suggested that the continued improvement with duration exhibited by human subjects may be due to their use of amplitude peaks (Author) A75-20123 Two-tone distortion products m a nonlinear model of the basilar membrane. J L Hall (Bell Telephone Laboratories, Inc , Murray Hill, N J ) Acoustical Society of America, Journal, vol 56, Dec 1974, p 1818-1828 27 refs Two-tone distortion products (DPs) were studied in an electrical transmission-line model for motion of the basilar membrane The entire length OT the membrane was represented, and an asymmetric as well as a symmetric nonlmeanty was introduced There were substantial similarities between the properties of even- and odd-order DPs observed in the model and those formerly observed psycho- physically These similarities support the contention that both the 2f1 - f2 and f2 - f 1 DPs may be, under some conditions, generated by mechanical nonlmeanties on the basilar membrane (take f1 and f2 to be two primary tones, f 1 less than f2) These DPs do not show up on some previous observations of mechanical motion of the basilar membrane, and they are therefore of interest SJM 108 A75 20250 A75-20124 Spectral cues used in the localization of sound sources on the median plane J. Hebrank and D Wright (Duke University, Durham, N C ) Acoustical Society of America, Journal, vol 56, Dec 1974, p 1829-1834 10 refs Three experiments investigating the sound spectral cues used in median-plane localization were performed Results show that spectra from 4 to 16 kHz are necessary for localization Frontal cues are a one-octave band reject (notch) with a lower cutoff between 4 and 8 kHz and increased energy above 13 kHz, elevational cues are a 1/4-octave peak between 7 and 9 kHz, and rearward cues are a small peak between 10 and 12 kHz with a decrease of energy above and below the peak Hypothesize that the concha's shape results in part from the necessity for elevation cues to be encoded by the external ear These cues are generated primarily by interference of the reflection of a sound off the posterior concha wall with the same sound as it directly enters the external auditory canal S J.M A75-20125 Rate versui level functions for auditory-nerve fibers in cats • Tone-bunt stimuli. M B. Sachs and P J. Abbas (Johns Hopkins University, Baltimore, Md ). Acoustical Society of America, Journal, vol. 56, Dec 1974, p. 1835-1847 27 refs Grant No PHS-2-R01-NS-05143, Contract No F44620-71-C-0024 Average discharge rate of single auditory-nerve fibers in cats was measured in response to 400 msec single-frequency tone bursts of varying intensity There was a continuum of curve behaviors between flat and sloping saturations at hyperthreshold levels Higher threshold fibers tended to have more sloping saturations than did lower threshold fibers with the same characteristic frequency (CF) For fibers with the same CF, normalized slopes of the rate-level functions for CF tones were a decreasing function of threshold For fre- quencies above the CF, the slope of the rate-level functions decreased with increasing frequency, below the CF, slopes either approximated the CF slope or increased to some maximum as frequency decreased A model is presented that relates rate to basilar-membrane displace- ment via a saturating nonlmeanty equation, and it compares well with the results SJ.M A75-20126 Transformation of sound pressure level from the free field to the eardrum in the horizontal plane. E A G. Shaw (National Research Council, Div of Physics, Ottawa, Canada) Acoustical Society of America, Journal, vol 56, Dec. 1974, p 1848-1861 25 refs Measurements of pressure transformation, azimuthal depen- dence, interaural level difference, and ear canal pressure distribution from 12 studies are brought together in a common framework The pool of data covers 100 subjects, the majority male, measured in five countries over a 40-yr period Logical procedures are developed to identify the surfaces which best fit these essentially three- dimensional distributions of data, making allowance for the many disparities between studies Sheets of data are presented showing transformation to the eardrum, azimuthal dependence, and interaural difference as functions of frequency from 0 2 to 12 kHz at 45 deg intervals in azimuth Other sheets show azimuthal dependence and interaural difference as functions of azimuth at 24 discrete fre- quencies The logical procedures, data presentations, and review of disparities lead to the construction of self-consistent families of curves best fitting the data and showing the average sound pressure transformation from the free field to the human eardrum as a function of frequency at 15 deg intervals in azimuth Possible explanations of differences between studies are suggested (Author) A75-20127 Pure-tone, third-octave, and octave-band at- tenuation of ear protectors R Waugh (National Acoustic Laboratories, Millers Point, Australia) Acoustical Society of America, Journal, vol 56, Dec 1974, p 1866-1869 7 refs Experimental confirmation is shown of the practical identity of measuring ear-protector attenuation for pure tones and for 1/3- octave bands centered at the same pure-tone frequencies In typical broad-band industrial noise, variations of spectrum shape have a negligible influence on an ear protector's octave-band attenuation The use of pure-tone attenuation values at octave-band center frequencies as estimates of octave-band attenuation can lead to errors exceeding 10 dB. In the octaves centered at 500 Hz and above, ear-protector attenuation should be measured at 1/3-octave center frequencies (Author) A75-20128 Hypothesis on the function of the crossed olivocochlear bundle. C D Geisler (Wisconsin, University, Madison, Wis) Acoustical Society of America, Journal, vol 56, Dec 1974, p 1908,1909 19 refs Grant No NIH-NS-06225 Electrophysical evidence indicates that maximum stimulation of the crossed olivocochlear bundle (COCB) shifts auditory nerve discharge rate curves to the right The hypothesis presented here holds that this shifting is a significant function of the COCB it adjusts the dynamic ranges of the afferent neurons to allow the encoding, by discharge rate, of higher intensity stimuli Some behavioral data are discussed that support the theory S.J M A75-20129 Model of crossed olivocochlear bundle effects. C D Geisler (Wisconsin, University, Madison, Wis) Acoustical Society of America, Journal, vol 56, Dec 1974, p 1910-1912 17 refs Grant No NIH-NS-06225 A modification of the familiar variable-resistance electrical circuit is presented as a model of the crossed olivocochlear bundle's effects mediated by efferent synapses on the outer hair cells. The model's field potentials and neural discharges are compared with experimental findings (Author) A75-20130 Determination of the transfer function of the external ear by an impulse response measurement V. Mellert, K. F. Siebrasse, and S. Mehrgardt (Gottmgen, Universitat, Gottmgen, West Germany) Acoustical Society of America, Journal, vol. 56, Dec 1974, p. 1913-1915. 9 refs. The transfer function of the human ear in a free sound field is measured by an impulse response technique The impulse response of the system is determined and the frequency response is computed with aid of a digital computer Disturbing responses in time and frequency domain caused by loudspeaker, probe microphone, and surrounding objects are eliminated. (Author) A75-20249 Human cortical magnification factor and its relation to visual acuity. A Cowey and E. T Rolls (Oxford University, Oxford, England) Experimental Brain Research, vol 21, Dec 30, 1974, p 447-454 14 refs Medical Research Council Grant No. G-971-397-B Human magnification factor (M), or the linear extent of visual striate cortex to which each degree of the retina projects, is calculated and compared to previously measured human visual acuity Results indicate that the reciprocal of M is directly proportional to the minimum angle of resolution and, correspond- ingly, that the magnification factor is directly proportional to visual acuity in man The total extent of striate cortex is estimated, and this estimation agrees closely with previous direct measurements S.JM A75-20250 Functional organization of primate oculo- motor system revealed by cerebellectomy. G Westheimer and S M Blair (California, University, Berkeley, Calif) Experimental Brain Research, vol 21, Dec 30, 1974, p 463-472 12 refs Grant No PHS-EY-00592 109 A75-20294 Unilateral cerebellar lobectomy was carried out in young and mature macaques. There is no significant abnormality in saccadic eye movement or in the vestibulo-ocular reflex There is a constant drift of the eyes in the contralateral direction, and the abilities to maintain eccentric gaze and to make smooth pursuit movements are jointly affected The syndrome is transient in young monkeys, and even bilateral cerebellar lobectomy carried out serially leaves some ability to hold eccentric gaze and pursue smoothly The findings permit the conclusion that the primate oculomotor organization depends on the active mamtamence of straight ahead gaze Saccades move the eyes in a coordinated way, and are also associated with correlated mnervation to hold the gaze in the new position Since cerebellar interventions which cause centripetal drift also always produce defects in pursuit movements, the abilities to maintain eccentric gaze and to pursue smoothly must have a common origin (Author) Acoustical Society of America, Journal, vol 57, Jan 1975, p 181-187.18 refs Grant No. NIH-NS-07787 Cross-correlational models of bmaural interaction postulate an interaural delay line in which neural impulses anting m one ear are delayed relative to those from the other. For localization based on interaural differences of time, accuracy is limited by the resolving power of this hypothetical delay line The present study sought to determine whether the delay line is organized in such a way as to provide a foveal area of best acuity, as exists in spatial vision Thus, threshold increments of interaural time difference (delta-t) were determined as a function of overall delay (t) Stimuli were acoustic transients of either low (0.1-2 kHz) or high (3-4 kHz) frequency content, ranging in level from 18 to 68 dB SPL The overall delay ranged from 0 to 500 microsec In general, the functions that relate delta-t to t were found to rise gradually with lowest thresholds occurring for the lower-frequency and higher-level clicks Clearly no sharp delineation exists in sound localization as in vision (Author) A7B-20294 ° Evoked potential con-elates of selective atten- tion with multi-channel auditory mputi. V. L. Schwent and S. A. Hillyard (California, University, La Jolla, Calif.). Electroencephalog- raphy and Clinical Neurophysiology, vol 38, Feb. 1975, p 131-138. 27 refs. Grants No. NCR05-009-198, No NIH-1-RO1-MH-25594-01 Ten subjects were presented with random, rapid sequences of four auditory tones which were separated in pitch and apparent spatial position. The N1 component of the auditory vertex evoked potential (EP) measured relative to a baseline was observed to increase with attention. It was concluded that the N1 enhancement reflects a finely tuned selective attention to one stimulus channel among several concurrent, competing channels. This EP enhancement probably increases with increased information load on the subject A.TS A75-20295 The contingent negative variation during a memory retrieval task. W T Roth, B. S Kopell, J. R Tmklenberg, C F. Darley, R Sikora, and T. B Vesecky (Stanford University, Stanford, U S Veteran Administration Hospital, Palo Alto, Calif ). Electroencephalography and Clinical Neurophysiology, vol 38, Feb 1975, p 171-174 12 refs Research supported by the Van Amenngen Foundation and U S. Veterans Administration, Grant No NIH-AA-00498-02 Scalp recorded evoked potentials were measured during a memory-retrieval task in which the subjects were required to decide whether a probe digit was contained in a set of target digits The amplitude of the contingent negative variation (CNV) was found to be greatest when there was only one target digit The evoked potential 300 msec after the probe increased with decreasing set size, regardless of whether a motor response was required ATS A75-20796 Relation of the loudnen function to the intensity characteristic of the ear W S Hellman (Boston University, Boston, Mass ) and R P Hellman (Harvard University, Cambridge, Mass ) Acoustical Society of America, Journal, vol 57, Jan 1975, p 188-192 26 refs NIH-supported research A representation of the pure-tone loudness function, given by Psi - x raised to the power of theta times F(x), is discussed, where x is the ratio of stimulus to threshold intensity and theta is the power function exponent The form of F(x) is obtained from the empirical loudness curves at 1000 and 250 Hz The structure of F(x) is shown to be in quantitative agreement with known steady-state driven firing rate activity of eighth-nerve units. We suggest that F(x) is propor- tional to the driven firing rate function R(x) of the auditory sensory receptor A specific choice is made for the algebraic form of R(x) by identifying it with the driven rate function in a sensory receptor model proposed recently by Zwislocki Within the model, a three-parameter fit to the loudness function is obtained It is shown that similar results can be obtained for vibrotaction (Author) A75-20825 Individual differences in response to the en- vironment. R T Wilkinson (Medical Research Council, Applied Psychology Unit, Cambridge, England) Ergonomics, vol 17, Nov 1974, p 745-756 21 refs Questions of performance are considered, taking into account a laboratory study of stress involving loss of sleep and serial reaction time, aircraft noise, a special design required to examine individual differences, and the effect of a loss of sleep on rote learning Effects of the environment on personal comfort are also examined, giving attention to questions of validation, the consistency of subjective ratings, and range effects G R A75-20524 * A universal bird head-holder for stereotaxic surgery G N McEwen, Jr. (Illinois, University, Urbana, III , NASA, Ames Research Center, Moffett Field, Calif) Electro- encephalography and Clinical Neurophysiology, vol 37, Dec 1974, p 657,658 NSF Grant No GB-13797 A75-20525 * Immediate and delayed effects of nitrogen mustard on cell replication in an autogenous rat sarcoma J Post, R J Sklarew, and J Hoffman (Goldwater Memorial Hospital, Roosevelt Island, N Y ) National Cancer Institute, Journal, vol 52, June 1974, p 1897-1903 19 refs Grants No NGR-33-016-102, No PHS-CA- 03917-13, No. PHS-CA 14432-01 A75-20795 Difference thresholds for interaural delay. E R. Hafter and J De Maio (California, University, Berkeley, Calif) A75-20826 * Immediate cardiac response to exercise - Physiologic investigation by systolic time intervals at graded work loads. A P Xenakis, V. M Quarry, and D H Spodick (Lemuel Shattuck Hospital, Tufts University, Boston, Mass.) American Heart Journal, vol 89, Feb 1975, p. 178-185 19 refs. Grant No NGR-22-012-026. A75-20827 The use of echocardiography to measure iso- metric contraction time. G M Ziady, T Hardarson, and R Curiel (Royal Postgraduate Medical School, Hammersmith Hospital, London, England) American Heart Journal, vol 89, Feb 1975, p 200-206 20 refs. Research supported by the British Heart Founda- tion Current methods for estimating isometric contraction time are discussed, and an alternative method using echocardiography is 110 A75-20890 suggested. In 11 out of 15 patients tested, the alternative (ultrasonic) technique results correlated with the internal isometric contraction time. The ultrasound isometric contraction time showed a superior discriminating value to the external isometric contraction time for differentiating the normal subjects (also tested) from the patients S.J.M A75-20882 Effect of a general aviation trainer on the stress of flight training C E Melton, J M McKenzie, J R Kelln, S M Hoffmann, and J T Saldivar (FAA, Civil Aeromedical Institute, Oklahoma City, Okla) Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 1-5 18refs Sixteen students were given flight training according to a highly standardized and rigidly controlled 35-hr syllabus Eight of the group (TG) received 10 hr of their training in a Link GAT-1 ground trainer and 25 hr in a Cherokee 140B The other eight (AG) received all of their training in the airplane The resting heart rate, physical work, as indicated by O2 consumption, and urine chemistry were measured Objective flight tests administered four times during the syllabus indicated insignificant differences between TG and AG Likewise, a check pilot who did not know to which group a student belonged could not differentiate between groups TG and AG It was concluded that 10 hr training in the GAT-1 did not compromise the flying skill as judged by the check pilot (Author) A75-20883 Effects of long-term exposures to 100% oxygen at (elected simulated altitudes on the pulmonary surfactant in mice. P J. Sheffield (USAF, School of Aerospace Medicine, Brooks AFB, Tex ) Aviation, Space, and Environmental Medicine, vol. 46, Jan 1975, p 6-10.20refs. A75-20884 * Effect of potassium depletion in normal males • An Apollo 15 simulation. K H. Hyatt, S B Hulley, J M Vogel, C P Spears (U S Public Health Service Hospital, San Francisco, Calif.), P C Johnson (Baylor University, Houston, Tex ), G W Hoffler, P C Rambaut, J A Rummel, and C Huntoon (NASA, Johnson Space Center, Houston, Tex ) Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 11-15 7 refs. In the course of Apollo 15, physiologic abnormalities, mani- fested by ectopic activity on the ECG and unusual alterations in exercise tolerance, occurred in the crew of the Lunar Excursion Module These were associated with decreases in total body potassium, measured by K-42, of 10% and 15% The possibility of inadequate potassium (K+) intake existed. A simulation study was performed prior to Apollo 16, corresponding in duration to Apollo 15 Subjects endured the same sleep aberrations and caloric expenditure as the Apollo 15 astronauts Subjects consumed a diet containing only 15 mEq/d of K+ during the entire 12 days of absolute bedrest. Study implications and reasons for discrepancies between K+ loss measured by balance techniques and K-42 are reviewed. (Author) A75-20885 Organ fluid changes and electrolyte excretion of rats exposed to high altitude B. M Christensen, H. L. Johnson, and A. V. Ross (U.S. Army, Letterman Institute of Research, San Francisco, Calif.). Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p. 16-20. 21 refs. A75-20886 * Ultrastructural alterations observed in mouse lung after prolonged He/O2 exposure. G. A. Harrison (NASA. Ames Research Center, Moffett Field, Calif.) and J. D. Solomon (Union Carbide Corp, Tonawanda, N.Y ). Aviation, Space, and Environ- mental Medicine, vo\. 46, Jan 1975, p 21-25 19 refs Contract No. NAS2-3900 A75-20887 Effects of a multi-hour immersion with inter- mittent exercise on urinary excretion and tilt table tolerance in athletes and nonathletes. J. Stegemann, U. Meier, W Skipka, W. Hartlieb, B. Hemmer, and U. Tibes (Deutsche Sporthochuschule, Cologne, West Germany) Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 26-29 18 refs Research supported by the Bundesministenum fur Verteidigung A75-20888 • Microbiological sampling of the spacecraft atmosphere during a simulated Sky lab mission R. M. Brocket! and J. K. Ferguson (NASA, Johnson Space Center, Epidemiology Section, Houston, Tex ). Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 30-32 10 refs. A Skylab Air Sampler (SAS) has been developed for use during Skylab missions. The SAS was used in the Skylab Medical Experi- ments Altitude Test (SMEAT) to gather baseline data which could be directly compared to data obtained during actual Skylab missions. The results obtained in the SMEAT gave no evidence of consistent change in either concentration or types of microorganisms in the SMEAT atmosphere over the 56-d test Microorganisms found included some potential pathogens but were largely normal human microflora Few typical soil microorganisms were found. These findings are related to commonly anticipated effects of long-term spaceflights on environmental microflora and to other closed environment studies. (Author) A75-20889 Physiological reactions to wet-cold L Vang- gaard (Copenhagen, University, Copenhagen, Denmark) Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 33-36. 8 refs Changes in extremity temperatures during general cold stress were investigated The changes in local temperatures were found equal to those seen under circulatory arrest In order to investigate the influence of these changes on motor function, the relation between local temperature and nervous conduction velocity in a peripheral motor nerve (n ulnaris) was carried out in subjects exposed to a minor cold stress (to avoid the influence of Lewis hunting reaction) The decrease in conduction velocity was found to be 15 m/s per 10 C fall in temperature At a local temperature of 8-10 C a complete nervous block was established This leads to an explanation of the clinical findings in wet-cold situations, where the very rapid onset of physical impairment corresponds to the effect of a local cooling in the extremities and not, as commonly accepted, to a developing general hypothermia. (Author) A75-20890 Optimal use of nitrogen to suppress the high pressure nervous syndrome. P B Bennett, J Roby, S Simon, and 0. Youngblood (Duke University Medical Center, Durham, N C.). Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 37-40 20 refs Grants No PHS-HL-07896-11, No. PHS-HL-12157, Contract No N00014-67-A-0251-0022 Five subjects were compressed to 1000 ft for 2 hr breathing 3 2 ATA nitrogen, 0 5 ATA oxygen, and the remainder helium The compression took 33 mm with a 10 sec stage at 50 ft (2 5 ATA), 1 mm at 320 ft (107 ATA), and 2 mm at 700 ft (22 ATA) Hypothetically, this 1 10 ratio for nitrogen-helium partial pressures should induce neither nitrogen narcosis nor the high pressure nervous syndrome (HPNS) Tests, therefore, were made during the experi- ment of postural tremor, spontaneous electroencephalogram, psycho- motor and intellectual activities, and subjective sensations It is concluded that use of a 1 10 ratio of N2 H2 is effective in the control of narcosis and HPNS during rapid compression to 1000 ft. (Author) 111 A75-20891 A75-20891 Respiration during heat stress. C Saxton (RAF, Institute of Aviation Medicine, Farnborough, Hants , En- gland) Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 41-46 13refs In human subjects at rest, changes in heart rate, pulmonary ventilation, tidal volume, respiratory rate, and end-tidal carbon dioxide tension were examined at increases in deep body tempera- ture of 1 C and 2 C Each of these latter target temperatures was achieved at two different rates of temperature increase The increase in deep body temperature was associated with a rise in heart rate and tidal volume and a reduction in respiratory rate An increase in pulmonary ventilation associated with a reduction in end tidal carbon dioxide tension occurred only when deep body temperature increase reached 1 5 C The apparently greater change in both pulmonary ventilation and end-tidal carbon dioxide tension during the more rapid increase in deep body temperature by 2 C was not significant (Author) A75-20892 * Plasma thyroxine changes of the Apollo crew- men. M Shemfeld, C S Leach (NASA, Johnson Space Center, Endocrine Laboratory, Houston, Tex ), and P C Johnson (Baylor University, Methodist Hospital, Houston, Tex ) Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 47-49 13refs Blood drawn from Apollo crew members prior to the mission, at recovery, and postmission, was used to examine the effect Apollo mission activities have on thyroid hormone levels At recovery, statistically significant increases in thyroxine and the free thyroxine index were found Serum cholesterol and triglycendes were de- creased No change of statistical significance was found in the T3 binding percentage, total serum proteins, and albumin We conclude that Apollo activities and environment caused the postmission increase in plasma thyroxine The prolonged postmission decreases in serum cholesterol may be one result of the increased thyroxine activity (Author) A75-20893 Adrenocortical activity and urinary cyclic AMP levels - Effects of hypobanc hypoxia. R Francesconi and A Cymerman (US Army, Research Institute of Environmental Medi- cine, Natick, Mass ) Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 50-54 26 refs Six highly motivated and trained military test subjects were exposed to a simulated altitude of 4267 m (447 torr) for 48 hours, preceded and followed by sea level runs lasting 32 hours During each scenario test subjects were required to perform their respective military tasks on a continual basis with sporadic rest not exceeding several hours Extremely high levels of plasma cortisol prior to the start of each session and persistently elevated concentrations of urinary 17-OH corticosteroids at sea level were consistently observed This observation probably explains the relatively minor changes m adrenocortical output noted during acute exposure to hypobanc hypoxia Analogous results were obtained for urinary cyclic AMP, i e, elevated baseline levels and minimal response to high altitude The results indicate an attenuated response as well as an association between urinary measures of adrenocortical activity and cyclic AMP excretion (Author) A75-20894 Re-evaluation of a tilt-back seat as a means of increasing acceleration tolerance. J W Burns (USAF, School of Aerospace Medicine, Brooks AFB, Tex) Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 55-63 11 refs Relaxed tolerance was determined on seven subjects exposed to rapid onset (RO, 1 G/sec) and gradual onset (GO, 1 G/10 sec) acceleration at seat back angles of 13, 30, 45, 55, 65, and 75 deg from the vertical There was no significant difference between relaxed tolerance at the control angle of 13 and tolerance at 30 deg However, at 45 deg there was a significant 0 5 G increase in tolerance compared to control Thereafter, tolerance continued to increase in an exponential manner to 8 G at 75 deg, an increase over control of 100% As relaxed tolerance increased with increasing back angle, peak heart rate during acceleration significantly decreased The amount of thoracic pressure necessary to maintain a preselected visual field declined as the back angle was increased from 13 to 45 to 65 deg at the same acceleration level (Author) A75-20895 Distribution characteristics of methylhydra- zine in the plasma and cerebrospmal fluid of monkeys W T Gormley (USAF, Aerospace Medical Research Laboratory, Wright- Patterson AFB, Ohio) Aviation, Space, and Environmental Medicine, vol 46, Jan. 1975, p 64-68 23 refs A lumped parameter mathematical model including extracellular fluid, intracellular fluid, and cerebrospmal fluid compartments has been applied to describe methylhydrazine (MMH) distribution kinetics in the blood and cerebrospmal fluid of Rhesus monkeys Ten monkeys, average weight 5 5 kg, were given intravenous infusions of MMH while blood and cerebrospmal fluid samples were periodically collected and analyzed for MMH The mathematical model was used to simulate the infusions and the simulations were compared with experimental data to validate the model and to evaluate the mass transfer parameters required by the model. (Author) A75-20896 Normal coronary angiography in an aircrew- man with serial exercise test changes. A J Thompson, V F Froehcher, Jr, M R Longo, Jr, and J H Triebwasser (USAF, School of Aerospace Medicine, Brooks AFB, Tex ) Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 69-73 16 refs A75-20899 Some highlights of aircraft passenger behavior research H B Altman (Survival and Flight Equipment Association, Canoga Park, Calif ) Aviation, Space, and Environmental Medicine, vol 46, Jan 1975, p 89-91 7 refs A brief review is offered of the field of aircraft passenger safety research Problems associated with passenger behavior, e g, panic, and passenger safety education studies and requirements are dis- cussed In addition, a comparison is drawn between commercial and corporate aircraft passenger safety requirements and current research and development programs It is concluded that there is a need for increased funding and more emphasis to be placed on education in the areas of aircraft passenger safety research (Author) A75-20900 * Temperature responses to infusion of elec- trolytes during exercise J E Greenleaf, S Kozlowski, H. Kaciuba- Uscilko, K Nazar, and Z Brzezmska (NASA, Ames Research Center, Moffett Field, Calif , Polish Academy of Sciences, Laboratory of Applied Physiology, Warsaw, Poland) In Temperature regulation and drug action Basel, S Karger AG, 1975, p 352-360 26 refs To gam more insight into the ion-osmotic influence on temperature regulation, the rectal temperature responses of mongrel dogs were measured during one hour of treadmill-running at 1 2 m/sec up a 12 deg slope Results indicate that as in man, the rise in body temperature during exercise appears to be a regulated process There is a direct relationship between the rise and equilibrium levels of rectal temperature and the plasma sodium and osmotic concentra- tions It remains to be determined if the hypernatremic-osmolahty inhibits peripheral blood flow, the panting, salivation response, or both Some background on previous experiments on resting and exercising dogs and men is recounted S J M A75-20918 # Reactions of neurons in the second auditory cortical area to sound stimulation (Raaktsii neironov vtoroi slukhovoi zony na zvukovoe razdrazhenie). I I Shelest (Akademua Nauk Ukrainskoi SSR, Institut Fiziologn, Kiev, Ukrainian SSR) Neirofiziologiia, vol. 6, Nov.-Dec. 1974, p. 571-576 19 refs. In Russian. 112 A75 21042 A75-20950 Tolerance of one species of jerfooa /Jaculus onentalis/ to prolonged exposure to deep hypothermia R K Andjus, M El Hilali, J -P Veillat, and K. Baddouri (Beograd, Univerzitet, Belgrade, Yugoslavia, University Mohammed V, Rabat, Morocco) Journal of Physiologic, vol 68, Jan. 1975, p 531-542 23 reft Jerboas were found to have better tolerance to prolonged hypothermia than most nonhibernators A mean survival time of 3 5 days for a group of 25 animals was obtained, and six animals were rewarmed after two to six days of hypothermia The breathing pattern consisted of alternating periods of deep breathing and apnea The underlying mechanisms of the survival have yet to be deter- mined, it is also not yet known whether there is a connection between this survival and the jerboa's tolerance to dehydration S J M dyn cm/sec/sec. During states of augmented contractility induced by isoproterenol, the peak acceleration of energy expenditure increased to 126,000 + or - 33,000 dyn cm/sec/sec. Conversely, with a reduction of contractility induced by propranolol, the peak isovolumic rate of change of power decreased to 30,000 + or • 5,700 dyn cm/sec/sec (Author) A75-20961 Effects of hypoxia, cyanide, and ischaemia on myocardial contraction • Observation! in isolated muscle and intact heart F. A. Pirzada, W. B Hood, Jr, J V. Messer, and O. H. L. Bing (Boston City Hospital, Tufts University, Boston University, Boston, Mass). Cardiovascular Research, vol. 9, Jan. 1975, p. 38-46. 23 refs. Research supported by the Massachusetts Heart Association and American Heart Association; Grants No NIH-71-2498, No NIH-HL- 14646 A75-20958 * Heightened sexual interest and sleep distur- bance. V Zarcone, A De La Pena, and W C Dement (U S Veterans Administration Hospital, Palo Alto, Stanford University, Stanford, Calif) Perceptual and Motor Skills, vol 39, Dec 1974, p 1135-1141 8 refs Grants No PHS-MH-13860, No NGR-05-020-168 The study demonstrates a behavioral effect of selective sleep disturbance in normal human subjects Ten male subjects were selectively REM-depnved for two nights by awakening them at the onset of REM sleep In addition, there were baseline and non-REM awakening conditions Heightened sexual interest was defined by the number of film frames (using a Mackworth camera) in which subjects fixated on parts of the female figure in photographs The largest mean difference in sexual interest was found between baseline and REM-depnvation Both the non-REM awakenings and REM-sleep deprivation enhanced sexual interest The failure to demonstrate a significant difference between REM-depnvation and non-REM awakenings may be due to the fact that subjects were REM-sleep- deprived in both conditions It is suggested that REM-sleep loss may lead to increased selective attention and preoccupation with any cues which are usually interesting (Author) A75-20959 Effect of delay of feedback and type of movement on laterally displaced vision. S F Wong and C R Borresen (Wichita State University, Wichita, Kan ) Perceptual and Motor Skills, vol 39, Dec 1974, p 1331-1336 14 refs 144 Ss were run in an experiment investigating the effects of type of movement (active vs passive), type of feedback (none, delayed, immediate) and the interaction effect on laterally displaced vision The mam hypothesis was that delayed feedback would be particularly effective under the condition of passive movement While the mam hypothesis was not supported, several secondary ones were supported The hindering effect of the lack of significance of the mam effect of type of movement on other hypotheses was pointed out (Author) A75-20960 Ventricular performance and energy of com- pression, power, and rate of change of power during isovolumic contraction. P D Stein, G G McBride, and H. N. Sabbah (Oklahoma, University, U S. Veterans Administration Hospital, Oklahoma City, Okla ) Cardiovascular Research, vol 9, Jan 1975, p. 29-37 10 refs Research supported by the U S. Veterans Administra- tion and American Heart Association, Grant No. NIH-72-2921B During isovolumic contraction, there is a calculable compression of the blood within the ventricle Energy is expended by the ventricle during isovolumic contraction, and some of it is transferred to the blood in the form of elastic compression The rate of energy transfer (power) and acceleration of energy transfer (rate of change of power) during isovolumic contraction were calculated. In anaesthetized dogs, the isovolumic energy of compression was 42 + or - 6 dyn cm, peak isovolumic power was 1,400 + or - 300 dyn cm/sec, and peak rate of change of power was 56,000 + or -15,000 A75-20962 Design and function of a mechanical assembly for recording echocardiograms during upright exercise. D. R. Redwood, W L Henry, S Goldstein, and E R Smith (National Institutes of Health, Div of Research Services and National Heart and Lung Institute, Bethesda, Md ) Cardiovascular Research, vol 9, Jan 1975, p. 145-149 12refs. A75-21001 * Origins of biological information and the genetic code. S W Fox (Miami, University, Coral Gables, Fla ). Molecular and Cellular Biochemistry, vol. 3, Apr 15, 1974, p 129-142 72 refs NASA-supported research Information, defined as the capacity of a molecule or system for selective interactions with other molecules or systems, is followed through its evolution from prebiological information to proto- nbosomes Emphasis is on proteins and protein-like polymers, and later on ATP The research will contribute more to the understanding of the essence of the genetic mechanism. S.J M. A75-21022 Ophthalmologic stereophotography. V Kratky (National Research Council, Ottawa, Canada) Photogrammetric Engineering and Remote Sensing, vol 41, Jan 1975, p 49-64 15 refs Stereophotographs taken by ophthalmologic instruments do not meet basic photogrammetric requirements, their geometry is atypical and cannot be assessed by standard calibration procedures This analysis of two basic categories of instruments shows the peculiarities of the single-image and stereoimage formations Although parallax- type instruments and analog plotters can mainly provide approxi- mate solutions, analytical methods (and especially analytical plot- ters) offer a more rigorous and reliable photogrammetric treatment. This includes the reconstruction of a model from parallel or nearly parallel projections which are typical for some ophthalmologic instruments The basic theory of these unconventional procedures is illustrated by an example (Author) A75-21042 * Fine structural changes in the lateral vextibular nucleus of aging rats. J E. Johnson, Jr. and J. Miguel (NASA, Ames Research Center, Neurosciences Branch, Moffett Field, Calif). Mechanisms of Ageing and Development, vol 3, 1974, p 203-224. 56 refs NASA Task 970-21-11-11 The fine structure of the lateral vestibular nucleus was in- vestigated in Sprague-Dawley rats, that were sacrif ted at 4 weeks, 6-8 weeks, 6-8 months, and 18-20 months of age. In the neuronal perikana, the following age-associated changes were seen with increasing frequency with advancing age rod I ike nuclear inclusions and nuclear membrane imaginations, cytoplasmic dense bodies with the characteristics of lipofuscin, and moderate disorganization of the granular endoplasmic rettculum. Dense bodies were also seen in glial cells Rats 18 to 20 months old showed dendritic swellings, axonal 113 A75-21043 degeneration, and an apparent increase in the number of axosomatic synaptic terminals containing flattened vesicles (presumed to be inhibitory in function). (Author) A75-21043 * # Correlation between thermal death and membrane fluidity in Baalim itearothermophilut. A F. Esser (California State University, Fullerton, Calif) and K A Souza (NASA, Ames Research Center, Biological Adaptation Branch, Moffett Field, Calif) National Academy of Sciences, Proceedings, vol 71, Oct 1974, p 4111 -4115. 27 refs. NASA Order A-89977. A75-21098 The effect of head tilt on meridional differ- ences in acuity - Implications for orientation constancy. M S Banks (Minnesota, University, Minneapolis, Minn) and S J Stolarz (California, University, La Jolla, Calif) Perception and Psycho- physics, vol 17, Jan 1975, p 17-22 34 refs Horn and Hill (1969) and others have reported that a small number of units in the cat visual cortex undergo changes in receptive field orientation associated with body tilt Such units reportedly compensate for tilt and may represent a mechanism for human orientation constancy To test this, we measured meridional dif- ferences in visual acuity for heat-vertical and head-tilted viewing conditions The results of Experiment 1 did not directly support or refute the involvement of tilt-compensatory units The results of Experiment 2, in which we controlled for countertorsion of the eyes, showed that meridional acuity differences correspond to the retinal and not the spatial orientation of the stimulus We conclude that tilt-compensatory cortical units are not involved in human orienta- tion constancy The physiological evidence indicating the existence of tilt-compensatory units in the visual cortex is also reexammed (Author) A75-21099 Area-luminance effects and the visual evoked brain response. G Kress (Regis College, Denver, Colo) Perception and Psychophysics, vol 17, Jan 1975, p 37-42 18 refs Grant No PHS-MH-14020-03 Psychophysical and electrophysiological studies report that luminance must be systematically increased as stimulus area is decreased if a constant response is to be elicited The visual evoked brain response (VEBR) was recorded from three human subjects as a function of eight stimulus intensities for five different areas The results indicate (1) the amplitude of the B-C component of the VEBR increases in a linear fashion as a function of increases in log luminance, (2) there is a linear reciprocal relationship between the magnitude of log area and log luminance for targets up to 20 deg, and (3) substituting total number of receptors in an area for stimulus size results in receptor-luminance functions identical to the corre- sponding area-luminance function Results are discussed in terms of neural summation (Author) cheloveka). I S Breslav and V N Salazkm (Akademna NaukSSSR, Institut Fiziologii. Leningrad, USSR) Fiziologicheskii ZhumalSSSR, vol 60, Dec 1974,p 1865-1872 11 refs In Russian On the base of experimental data a mathematical model of man's physiological responses to graduated muscular loads with different oxygen concentrations in the breathing mixtures was developed An analysis of this model suggests that such responses can be optimized d e respiratory and circulatory stress can be mini- mized) by varying of the inspiratory oxygen content Optimal oxygen concentration data obtained ranged from 21 to 33 per cent in relation of loads applied The respiratory parameters were found to be the most suitable criteria of the breathing environment optimality for the human being (Author) A75-21114 # Physiological reactions of thermoregulation to convective and radiant heat stimuli (Fiziologicheskie reaktsii termo- reguliatsn na konvektivnoe i luchistoe teplovoe vozdeirtvie). L M Melesova (Akademna Nauk SSSR, Institut Fiziologii, Leningrad, Akademna Meditsmskikh Nauk SSSR, Moscow, USSR). Fiziologi- cheskn Zhumal SSSR. vol 60, Dec 1974, p 1873-1879 16 refs In Russian Laboratory experiments were done with rabbits to compare the reactions of an animal's thermoregulation system to purely con- vective and purely radiant heating Temperature was recorded from the hypothalamus, the rectum, the skin of the ear, the bridge of the nose, and the back, and related to the room temperature measured in a hollow sphere to model a blackbody Vasodilation in the rabbit's ear was measured to indicate the reaction of the thermoregulation system It was found that with radiant heating, vasodilation and heat exchange in the rabbit begin at higher temperatures of the skin and hypothalamus than with convective heating It is thought that this difference is due to the fact that radiant heat has a smaller effect on the skin's thermoreceptors, so that a longer heating period is needed to trigger the thermoregulation system ATS A75-21166 Unclocklike behaviour of biological clocks A T Winfree (Purdue University, West Lafayette, Ind) Nature, vol 253, Jan 31,1975, p 315-319 88 refs The mechanisms which could underlie circadian rhythms fall naturally into groups with qualitatively different responses to disruption Experiments designed to distinguish between these mechanisms seem to exclude all of them It may be that multicellular organisms keep time, not by one 'clock' but by averaging many independent circadian oscillators (Author) A75-21100 Simultaneous visuomotor adaptation to op- tical tilt and displacement G M Redding (Illinois State University, Normal, III ) Perception and Psychophysics, vol 17, Jan 1975, p 97-100 15 refs Grant No PHS-MH-24420-01 Change in visuomotor direction and orientation was measured following simultaneous exposure to optical displacement and tilt Adaptation to both transforms simultaneously was not different from adaptation to each transform separately These results are consistent with previous work involving purely visual change, and suggest that the two kinds of adaptation involve independent processes for locus-specific and relational analysis (Author) A75-21113 # On the theoretical basis of the optimal oxygen content in the atmosphere for the human being (O teoreticheskom obosnovann optimal'nogo soderzhanna kisloroda v atmosfere dlia A75-21174 A mechanism for the electrocardiogram re- sponse to left ventricular hypertrophy and acute ischemia P S Thiry (California, University, Berkeley, Calif ), R M Rosenberg (San Francisco General Hospital, San Francisco, Calif ), and J A Abbott (California, University, San Francisco, Calif ) Circulation Research, vol 36, Jan 1975, p 92-104 31 refs. A proposed mechanism for explaining the electrocardiographs response in left ventricular hypertrophy and in subendocardial and epicardial acute ischemia was incorporated in a mathematical model of electrical heart activity The model of hypertrophy was simply an increase in cell size, and the principal effect on the computer- generated 12-lead electrocardiograms (ECGs) was an increase in R-wave amplitude and ventricular activation time and a flattening or polarity reversal of the T wave The model of acute ischemia was a reduction between plateau and resting potential of the trans- membrane action potential The principal effect on the computer- generated 12-lead ECGs was an S-T segment displacement up or down depending on the location of the lesion (Author) 114 A75-21568 A75-21175 A model of psychosocial hypertension show- ing reversibility and progression of cardiovascular complications J P Henry, P M. Stephens (Southern California, University, Los Angeles, Calif ), and G. A. Santisteban (Seattle University, Seattle, Wash ) Circulation Research, vol 36, Jan 1975, p 156-164 22 refs Grants No NIH-MH-19441-03, No NIH-HL-09758-05 The sequence of pathophysiological changes that can result from the stimulating effects of a sustained disturbance of the social environment was studied in ten colonies of socially deprived mice Sixteen formerly isolated males were placed with 16 normal females in population cages consisting of seven intercommunicating boxes Six of these socially disturbed 32-member colonies were terminated after periods of interaction ranging from 2 days to 9 months The remaining four were terminated a month or more after the males had been returned to individual isolation Indirect blood pressure measurements, body and heart weights, and sections of hearts and aortas were studied in the males Following the shorter exposures, blood pressure reverted to normal in a few days Exposures of 6 months or more were associated with unchanged body weights and sustained increases in heart weight and blood pressure readings In addition, there was a significant development of aortic arterio- sclerosis and myocardial fibrosis These changes persisted despite prolonged return to isolation (Author) A75-21474 tf The heterogeneity of hemoglobin in man and animals (Pro geterogennist' gemoglobinu liudini i tvarin). M F Starodub Akademiia Nauk Ukrams'koi RSR. Visnik, vol 38, Dec 1974, p 44-52 87 refs In Ukrainian The present work reviews the mam results of numerous studies on the heterogeneity of hemoglobin in man and in other mammals The physico-chemical properties of the individual types of hemo- globin and their components are summarized Various polymer forms of hemoglobin in mice are briefly discussed Studies on rats and cats have shown their hemoglobin to consist of various fractions Directions of future research on the physiological role of different hemoglobin forms are indicated P T H A75-21522 ft Characteristics of conditioned reactions in different phases of natural human sleep (Osobennosti uslovnykh reaktsn v razlichnye fazy estestvennogo sna u cheloveka) V M Vasil'eva, M V Slavutskaia, and L A Farber (Moskovskn Gosudar stvennyi Universitet, Moscow, USSR) Zhurnal Vysshei Nervnoi Deiatel'nosti. vol 24, Nov-Dec 1974, p 1122-1129 28 refs In Russian It is shown that during all phases of sleep, correspondence of skin-galvanic, EEG, and EMG responses to the signal significance of stimuli is preserved It is most pronounced in the paradoxal phase of sleep as compared with slow-wave sleep. Suggestions have been made regarding physiological mechanisms of the phenomena (Author) A75-21523 i Automatic methods of tenmoactogram analysis when studying spontaneous and evoked motor activity (Avtomsticheskie metody analiza seismoaktogrammy pn luledovann spontannoi i vyzvannoi dvigatel'noi aktivnosti) V P Leutm and G V Abuladze (Akademna Meditsmskikh Nauk SSSR, Novosibirsk, USSR) Zhumal Vysshei Nervnoi Deiatel'nosti, vol 24, Nov -Dec 1974, p 1306-1308 In Russian Description of 3 sensor-equipped platform that provides elec- trical signals corresponding to seismic (vertical) and horizontal motor activity of small laboratory animals in neurophysiological experi- ments A vibration sensor attached to the elastically suspended platform provides the seismic-activity signals, while an electric grid on the platform surface serves as the source of horizontal-activity signals Recording equipment includes filters, amplifiers, a strip recorder, pulse counter, and a signal analyzer Figures illustrate quantitative records of motor activity as evidenced by habituation curves and stimuli-response curves for both seismic and horizontal motion T M A75-21565 Ventilatory effects of hypoxia and their dependence on CO2 pressure A S Rebuck and W E Woodley (McMaster University, Hamilton, Ontario, Canada) Journal of Applied Physiology, vol 38, Jan 1975, p 16-19 20 refs Medical Research Council of Canada Grant No MA-5126 In 11 healthy subjects the effect of progressive hypoxia on pulmonary ventilation at various alveolar carbon dioxide pressures was studied A rebreathing technique was used to produce hypoxia, CO2 was held constant and oxygen saturation was taken as the independent variable We found a linear relationship between ventilation and falls in oxygen saturation when C02 pressure was held at the resting mixed venous, end-tidal, or any intermediate level Within this range of CO2 pressure, a family of ventilation vs O2 saturation response curves was obtained for each subject The effect of altering the isocapnic level was to change the slope and position of the ventilation vs 02 saturation response curve, the amount by which the slope changed being related to the slope for that subject at their mixed venous-C02 pressure (Author) A75-21566 Effect of added elastances on the first loaded breath in man. L D Pengelly, J Greener, I Bowmer, A Luterman, and J Milic-Emili (McGlfl University, Montreal, Canada) Journal of Applied Physiology, vol 38, Jan 1975, p 39-43 17 refs Research supported by the Medical Research Council of Canada Tidal volume together with end-mspiratory pressure was mea- sured in four seated healthy men, during normal breathing and during single inspirations taken from a series of rigid containers which provided added elastances (range 5-70 cmH20/1) Experi- ments were performed both during quiet breathing and during ventilation increased by added dead space Added elastic loads always resulted in a decreased tidal volume This decrease was partly compensated by increased pressure developed by ths inspiratory muscles, being more so with greater added elastance, control ventilation, or both Analysis of our results indicates that the load-compensatory response may be attributed to changes in mechanical impedance of the ventilatory pump, due to the mechani- cal arrangement and the intrinsic properties of the inspiratory muscles (force-length and force-velocity relationships), changes in respiratory frequency with increasing ventilation, and to vagally mediated load compensation (Author) A75-21567 * Forearm blood flow during body temperature transients produced by leg exercise C B Wenger, M F Roberts, J. A J Stolwijk, and E R Nadel (Yale University, New Haven, Conn ) Journal of Applied Physiology, vol 38, Jan 1975, p 58-63 43 refs. Grants No NIH-ES-00123, No NIH-ES-00354, No. NGR-07-008-002 Subjects exercised for 30 mm on a bicycle ergometer at 30, 50, and 70% of maximal aerobic power in ambient temperatures of 15, 25, and 35 C and vapor pressures of less than 18 torr Exercise was used to vary internal temperature during an experiment, and different ambient temperatures were used to vary skin temperatures independently of internal temperature Forearm skin temperature was fixed at about 36 5 C Esophageal temperature was measured with a thermocouple at the level of the left atrium, and mean skin temperature was calculated from a weighted mean of thermocouple temperatures at eight skin sites Forearm blood flow was measured by electrocapacitance plethysmography Data are well accounted for by a linear equation independent of exercise intensity, although some subjects showed an equivocal vasodilator effect of exercise (Author) A75-21568 Glucagon and plasma catecholamma responses to graded and prolonged exercise in man H Gal bo (Copenhagen, University, Copenhagen, Denmark), J J Hoist (Bispebjerg Hospital, Copenhagen, Denmark), and N J Christensen (Kommunehospitalet, Aarhus, Denmark) Journal of Applied Physiology, vol 38, Jan 1975, p 70-76 33 refs 115 A75-21569 Eight men were studied during graded (47, 77, and 100% of maximal oxygen uptake) and prolonged (76%) exhaustive treadmill running During graded exercise the glucagon concentration increased 35% During prolonged exercise glucagon increased progressively to three times the resting value Norepmephrme increased from 0 40 ng/ml to 2 22, epmephrine from 0 07 to 0 42 during graded, and to 151 and 033, respectively, during prolonged exercise Insulin concentrations were depressed during work except for the heaviest load Fatty acids rose throughout prolonged exercise, whereas blood glucose significantly diminished 30 mm afterward Glucagon concen- trations correlated significantly with norepmephnne and epmephrine concentrations during prolonged and with epmephrine during graded exercise Although increments in catecholammes were similar, the glucagon secretion was larger during prolonged than during graded exercise While increments in catecholammes might explain increased glucagon secretion during graded exercise, they cannot account completely for the rise of glucagon during prolonged exercise (Author) A75-21569 A theory of aerosol deposition in the human respiratory tract. D B Taulbee and C P Yu (New York, State University, Buffalo, N Y ) Journal of Applied Physiology, vol 38, Jan 1975, p 77-85 16refs NSF Grant No K-040794 A theory is developed to predict particle deposition and its distribution m the human respiratory tract for any breathing condition A convection-diffusion equation for the particle con- centration with a loss term is used to describe the transport and deposition of particles In this equation, an apparent diffusion coefficient due to the velocity dispersion in the lung is present and found to be the dominant diffusion mechanism for the cases considered here The governing equation is solved numerically with Weibel's lung model A The particle concentration at the mouth is calculated during washm and washout and compared favorably with experimental recordings for 0 5-micron diameter di(2-ethylhexyl) sebacate particles The total deposition in the lung for particle size ranging from 0 05 to 5 microns is also computed for a 500-cu cm tidal volume and 15 breaths/mm The results in general agree with recent measurements of Heyder et al (1973) (Author) A75-21570 Acceleration time series resulting from re- petitive extension-flexion of the hand R N Stiles (Tennessee, University, Memphis, Tenn ) Journal of Applied Physiology, vol 38, Jan. 1975, p 101-107 16refs Grant No NIH-NS-08692 Power, or variance, spectra of acceleration records obtained from normal subjects during extension-flexion oscillations of a hand at frequencies between 0 5-5 0 Hz generally contained two or three frequency bands Partial separation of these oscillations in the time domain was obtained using the method of digital filtering (smooth- ing) In general, the peak frequency of the lowest frequency band occurred at, or nearly at, the frequency that the subject attempted to maintain during a 16-sec digitization period Consideration of absolute frequencies and the effect of mass on frequency indicated that one of the higher frequency bands was the result of normal hand tremor For low frequencies of voluntary oscillation, a second, higher frequency band occurred with a peak frequency within the range usually reported for abnormal hand tremor For voluntary oscillation frequencies above 1 5 Hz, this second, higher frequency oscillation generally occurred at twice the frequency of the voluntary oscilla- tion (Author) A75-21571 Early changes in lungs of rats exposed to 70% O2 R A Redding, T Aral, W H J Douglas, H Tsurutani, and J Overs (Memorial Hospital, Pawtucket, R I , W Alton Jones Cell Science Center, Lake Placid, N Y ) Journal of Applied Physiology, vol 38, Jan 1975, p 136-142 31 refs Grant No NIH-71-2153 Sixty-six respiratory disease-free rats, divided into four groups, were exposed to 70% 02 for 1 5, 4, 7, and 10 days and compared with 31 litttrmates exposed to room air for equal times Lung surfactant was separated from macrophages and potential serum protein contamination by differential centrifugation of endo- bronchial washings In the 02-exposed rats, developing lung edema was demonstrated by decreased dried/fresh lung weight ratio and increased alveolar protein content at 7 and 10 days At 7 days, lung compliance slope and hysteresis loop are decreased, while critical opening pressure increased Ultrastructurally, the only abnormality seen was an irregular widening of the alveolar capillary basement membrane on day 10 Alveolar lecithin content decreased slightly during the 10 days exposure, but remained highly saturated, whereas whole lung lecithin content increased These results suggest that the initial mechanical and morphological alterations in rats exposed to 70% 02 are related to lung edema and are not dependent upon lung surfactant alterations (Author) A75-21572 Hypoxic ventilatory depression in dogs C G Morrill, J R Meyer, and J V Weil (Colorado, University, Denver, Colo ) Journal of Applied Physiology, vol 38, Jan 1975, p 143-146 23 refs Grant No NIH-HL-14985 An experiment was carried out on dogs to determine the degree of hypoxia required to produce ventilatory depression and to study the effects of chloralose anesthesia, variations in blood carbon dioxide tension, and peripheral chemoreceptor denervation on nypoxic ventilatory depression In the awake, intact dog, ventilatory depression did not occur until the alveolar oxygen pressure reached 186 mm Hg (SEM) This value was not significantly different from that observed in chloralose anesthetized dogs Hyper- and hypo- capnia had no significant effect on the alveolar oxygen pressure at which ventilatory depression occurred Denervation of either aortic or carotid chemoreceptors produced a very small change in the alveolar oxygen pressure of ventilatory depression Denervation of both aortic and carotid chemoreceptors produced a further small increase In peripheral chemoreceptor-denervated animals, hypoxia produced no significant change in ventilation until the ventilatory depression point was reached These studies indicate that in the dog hypoxic ventilatory depression occurs only during severe hypoxia and is uninfluenced by chloralose anesthesia, hyper- or hypocapnia, and only slightly affected by chemoreceptor denervation (Author) A75-21573 * Orcadian variation of intercompartmental potassium fluxes in man M C Moore Ede, M F Brennan, and M R Ball (Harvard University, Peter Benet Brigham Hospital, Boston, Mass ) Journal of Applied Physiology, vol 38, Jan 1975, p 163-170 32 refs Contracts No NAS9-14249, No DA-49-193- MD-2337, Grant No NIH-HL-13872-15 Orcadian rhythms of plasma potassium concentration and urinary potassium excretion persisted in three normal volunteers when diurnal variations in activity, posture, and dietary intake were eliminated for 3-10 days Measurements of the artenovenous difference in plasma potassium concentration across the resting forearm and of erythrocyte potassium concentration suggested that there is a net flux of potassium from ICF to ECF m the early morning and a reverse net flux later in the day The total net ICF-ECF fluxes were estimated from the diurnal variations in extracellular potassium content corrected for dietary intake and urinary potassium loss The net fluxes between ICF and ECF were found to be counterbalanced by the circadian rhythm m urinary potassium excretion Desynchromzation of these rhythms would result in marked fluctuations m extracellular potassium content These findings suggest that some revision is required of the concept of basal state in potassium homeostasis (Author) A75-21574 Blood P/507 calculated from a single measure- ment of pH, P/O2/, and S/02/ A Aberman, J M Cavamlles, M H Weil, and H Srtubm (Southern California, University, Hollywood Presbyterian Hospital, Los Angeles, Calif) Journal of Applied Physiology, vol 38, Jan 1975, p 171-176 Grants No PHS-HL-05570,No PHS-GM-16462, No PHS-HS-00238 116 A75-21945 P(50), which is the oxygen tension corresponding to 50% saturation at pH 7 40, C02 pressure 40 torr, and temperature 37 C, was calculated from a single measurement of pH, oxygen pressure, and oxygen saturation at a known temperature in 135 blood samples from 21 normal nonsmokers and eight patients In the 92 blood samples with oxygen saturation between 20 and 90%, the standard deviation of repeated calculated P(50)'s on the same sample of blood at different oxygen saturation was plus or minus 1 0 torr Below oxygen saturation of 20% and above oxygen saturation of 90%, the standard deviations were plus or minus 5 5 and plus or minus 2 4 torr, respectively Combined measurement errors of plus or minus 1 torr in oxygen pressure, plus or minus 1% in oxygen saturation, plus or minus 001 in pH, and plus or minus 0 1 C in temperature are sufficient to explain the observed variation in calculated P(50) in 90% of 135 blood samples from 29 subjects and account for the greater observed variation at oxygen saturation less than 20% and greater than 90% (Author) A75-21575 A stable, sensitive, low-compliance capacitance force transducer B B Hamrell, R Panaanan, J Trono, and N R Alpert (Vermont, University, Burlington, Vt ) Journal of Applied Physiology, vol 38, Jan 1975, p 190-193 22 refs Research supported by the American Heart Association, Vermont Heart Association, and NSF, Grant No PHS-5S01-RR-05429 12 The measurement of active and passive force levels in heart muscle requires short- and long-term base-line stability The capaci- tance force transducer described here represents an optimization of the relationship between sensitivity, compliance, and frequency response m a design that minimizes long-term base-line drift related to thermal gradients within the apparatus Thermal stability of the instrument is obtained with the use of quartz and Invar in the construction of the variable capacitor, the maintenance of internal transducer temperature at a constant level well above ambient, and the use of thermally insulating air gaps Sensitivity ranges from 1 0 to 2 0 V/g wt in the several instruments tested, the output is linear, compliance* is negligible with static loads up to 6 g wt, hysteresis is not significant with transient loading with 20 g wt, and long-term drift is less than 0 050 g wt These instruments are designed for use with myocardial preparations but can be adapted for skeletal muscle experiments (Author) A75-21797 The relation of noise exposure to noise in- duced hearing damage J C Guignard (Dayton, University, Dayton, Ohio) and D L Johnson (USAF, Wright-Patterson AFB, Ohio) Sound and Vibration, vol 9, Jan 1975, p 18-23 14 refs A review is made of three documents prepared for the US Air Force and Environmental Protection Agency in 1973 dealing with the effects of noise on hearing, for continuous noise and impulsive noise, and factors influencing the incidence of noise-induced per- manent threshold shift (NIPTS) The most important conclusion drawn is that there exists a sufficient data base from which to predict, statistically, the effect of noise on the general population Areas are indicated in which further research is needed ATS A75-21804 Processing of positional information in the human visual system. I Rentschler, R Hilz, and W Grimm (Munchen, Umversitat, Munich, West Germany) Nature, vol 253, Feb 6, 1975, p 444, 445 7 refs Experiments were performed on human subjects' ability to perceive correctly the angular separation between two lines separated by less than 10 minutes of arc It was found that the lines appear to be displaced towards each other when they are of unequal luminance It is concluded that the detection of line stimuli and the neural evaluation of their positions are performed separately in the human visual system ATS A75-21867 A truly three-dimensional vectorcardiographic display V Kalff, D J Dewhurst, E R Trethewie (Melbourne, University, Melbourne, Australia), and W J Perkins (Melbourne, University, Melbourne, Australia, National Institute for Medical Research, London, England) Computers in Biology and Medicine, vol 4, Dec 1974, p 137-144 19 refs Research supported by the University of Melbourne The future clinical use of vectorcardiography is dependent upon a standardization of measurement procedures and an effective display of the vector loop Conventional two-dimensional displays of the three-dimensional loop may not adequately demonstrate certain cardiac abnormalities This paper describes a method for visualizing the complete vector loop on a cathode ray screen or plotter Transformation of the three coordinates for each point of the display is effected by an algorithm which allows for manual rotation of the loop about the orthogonal axes and provides depth perception by intensity modulation of the z-axis coordinates (Author) A75-21868 Quantification of abnormal EEC spike charac- teristics P Y Ktonas and J R Smith (Florida, University, Gainesville, Fla ) Computers in Biology and Medicine, vol 4, Dec 1974, p 157-163 11 refs NSF Grant No GK-15373, Grant No AF-AFOSR-72-2171 A digital computer technique is presented whereby abnormal scalp EEG transients are magnified and processed so that detailed characteristics of their morphology can be precisely quantified A set of six parameters describing these characteristics is proposed, and data from a quantitative analysis of abnormal spikes chosen from three human epileptics are presented Finally, the advantages of the presented method are discussed (Author) A75-21944 Differential diagnosis of anomalies of the great arteries by real-time two-dimensional echocardiography W L Henry, B J Maron, J M Griffith, D R Redwood, and S E Epstein (National Institutes of Health, National Heart and Lung Institute and Div of Research Services, Bethesda, Md ) Circulation, vol 51, Feb 1975, p 283-291 31 refs Results of the study indicate that the use of a newly-developed, real-time, mechanical sector-scanning two-dimensional ultrasound system to obtain images of the great arteries at their origin provides an accurate nomnvasive method for categorizing individuals with cyanotic congenital heart disease Anomalies studied included trans- position of the great arteries, tetralogy of Fallot, truncus artenosus, and pulmonary atresia This accurate an examination of the great arteries was formerly only available at necropsy S J M A75-21945 Predictive implications of stress testing Follow-up of 2700 subjects after maximum treadmill stress testing M H Ellestad and M K C Wan (Memorial Hospital Medical Center, Long Beach, Calif) Circulation, vol 51, Feb 1975, p 363-369 9 refs Research supported by the Long Beach Heart Association, Central Valley Heart Association, and Memorial and Childrens Medical Center Foundation Follow-up data including incidence of myocardial infarctions, progression of angina, and death were collected over a period of eight years after treadmill stress testing of a group of subjects A high correlation between positive test results and subsequent coronary events was observed The high incidence of events in equivocal responders indicates that the lower limit for a positive stress test should be lowered f'om the present 1 5 mm ST-segment depression to 1 0 mm Of the positive responders, those having had a previous infarct had twice the incidence of coronary events than did those without a previous infarct Subjects with large ST depressions (4 mm or more) showed no significant increase m events over subjects with 2 mm depressions Chronotropic incompetence, even if un- accompanied by ischemia, was correlated with the development of some new coronary event S J M 117 A75-22010 A75-22010 Banl forebram and hypothalamic connections to frontal and parietal cortex in the rhesus monkey. J Kievit and H G. J. M. Kuypers (Rotterdam, Erasmus Umversiteit, Rotterdam, Netherlands) Science, vol 187, Feb 21, 1975, p 660-662 19refs Research supported by the Dutch Organization for Fundamental Research in Medicine Horseradish peroxidase was injected in different parts of the frontal and parietal cortex in 17 rhesus monkeys In all cases the enzyme was transported retrogradely to neurons in the substantia innominata and hypothalamus as well as in the thalamus These new findings demonstrate that these cortical areas receive direct afferent fibers from hmbic basal forebram areas concerned with emotion and motivation. (Author) A75-22200 Changes in detection measures and skin resis- tance during an auditory vigilance task S Milosevic (Institute of Psychology, Belgrade, Yugoslavia) Ergonomics, vol 18, Jan 1975, p 1-8 17refs Twenty subjects detected slight changes of intensity in a 42 dB, 700 Hz signal, presented in an anechoic chamber According to the degree of confidence in signal perception, the subjects gave responses, within intervals of 4 sec, on a scale consisting of up to three categories of response During the run, the subjects' skin resistance was measured each 10 mm Results showed that during the run the percentage of correct and false responses decreased for both extreme criteria of response Sensitivity remained the same and the criterion index increased as a function of time Skin resistance also increased progressively The TSD parameters changed in accordance with Welford's activation hypothesis prediction, activation was closely related to the criterion and strategy of decision-making, and not to sensitivity (Author) A75-22201 The effect of rating scale parameters on the assessment of vibration intensity D J Oborne and M. J Clarke (Swansea, University College, Swansea, Wales) Ergonomics, vol 18, Jan 1975, p 67-79 10 refs Research supported by the Science Research Council Two experiments were performed to investigate the effects of (1) rating scale type (rating line or magnitude estimation scale), (2) scale ends and (3) type of rating line, on subjective ratings of vibration intensity Twenty-five S's took part in the first experiment (rating line) and the results indicated that neither different types of rating line nor the more common types of scale ends differentially affected rating behaviour The stimuli used in Experiment I were presented to eighteen S's in Experiment II, who were required to make their ratings by ascribing a number to each stimulus (magni- tude estimation) The results obtained from this experiment were very similar to those of Experiment I In addition to the above it was demonstrated that the rating method is a highly reliable method of obtaining subjective responses to vibration stimuli (Author) A75-22202 Waveguide modes and refractive index in photoreceptors of invertebrates D G Stavenga (Gronmgen, Rijks- umversiteit, Gronmgen, Netherlands) Vision Research, vol 15, Mar 1975, p 323-330 67 refs Research supported by the Nederlandse Orgamsatie voor Zuiver-Wetenschappehjk Onderzoek The refractive index of visual photoreceptors, if estimated by utilizing waveguide propagation, has to be corrected by a factor depending on the occurring mode The correction factor is presented graphically for a number of relevant modes Applied to the honeybee rhabdoms, it is shown that the correction for the mode propagation shifts the refractive index value of the rhabdom n = 1 347 as reported by Varela and Wntanen (1970), to much higher levels, presumably in the range of n = 1 365 plus or minus 0 006 It is concluded that this value represents an acceptable estimate for the refractive index of invertebrate photoreceptors Observed mode patterns now are in accordance with the theory The consequences of the deduced data for the literature concerning waveguide optical studies of invertebrate photoreceptors are reviewed (Author) A75-22203 Saccadic presentation of a moving target F Holly (Michigan State University, East Lansing, Mich) Vision Research, vol 15, Mar 1975, p 331-335 14 refs Observers viewed a rightward moving dot (CRO Trace) during nghtward and diagonal eye movements It was found that (1) with horizontal saccades, when the trace moved at the same velocity as the eyes it appeared as a stationary dot located at the left edge of the trace's path (indicating the absence of an extraretmal movement signal), and (2) whether the perceived target was aligned with the left or right edge of the trace's path (rightward eye movement condition) and whether it appeared to move upward or downward from the actual trace path (diagonal eye movement condition) depended upon whether the velocity of the trace was greater than or less than that of the eyes Results were discussed in terms of ex-afference and re-afference and the interpretation that one makes of such stimuli (Author) A75-22204 Temporal independence of the Bezold-Brucke hue shift. J D Cohen (Mount Holyoke College, South Hadley, Mass) Vision Research, vol 15, Mar 1975, p 341-351 30 refs Grant No NIH-EY-00249 The Bezold-Brucke hue shift was measured using a haploscopic matching technique at 12 spectral loci between 450 and 650 nm, for each of five exposure durations from 150 to 2000 msec The size of the luminance-dependent hue shift remained constant across durations, indicating that the hue shift was independent of exposure duration A differential adaptation hypothesis that had been proposed as the unitary basis for the qualitativelffsimilar time- dependent and luminance-dependent hue shifts is incorrect Separate mechanisms must underlie the two types of hue shift It was also shown that under conditions where retinal contrast is eliminated, measures of wavelength discrimination are independent of exposure duration in the 150-2000 msec range (Author) A75-22205 * Characteristics of moving visual scenes influ- encing spatial orientation. R Held, J Bauer (MIT, Cambridge, Mass), and J. Dichgans (MIT, Cambridge, Mass., jMeurologische Umversitatsklmik, Freiburg im Breisgau. West Germany) Vision Research, vol 15, Mar 1975, p 357-365 19 refs Research supported by the Sloan Foundation, Deutsche Forschungsgemem- schaft Contract No SFB-70, Grant No NIH-1-R01-EY-01191-01, Grant No NG L-22-009-308 A visual display rotating in a frontal plane induces effects equivalent to a change in the apparent direction of gravity. Magnitude of visual tilt was measured as a function of time from onset of rotation, velocity of rotation, and area and retinal location of the stimulating field The mejor part of the tilt occurs within 30 sec from onset of stimulation It increases with angular velocity, but independently of area and location of field, up to about 30 to 40 deg of rotation per sec and then levels off Tilt increases with field size but the effect of thin ring-fields increases with retinal eccentricity The interaction of visual and nonvisual determinants of the induced effects is discussed (Author) A75-22206 Function of perception - Influence of visual parameters (Fonction de perception - Influence des parametres visuels) G Cassin (Paris, University, Institut d'Optique, Pans, France) Vision Research, vol 15, Mar 1975, p 367-374 13 refs In French Some aspects of the perception function are studied This function is defined as the subjective to objective contrast ratio when an object test (sine grating) is observed Various methods of measurements of this function are briefly described and compared The influence of various parameters such as object field, observation distance, and so on, is shown in the case of one of these methods, previously described by Bryngdahl It is found that the results are very dependent upon these parameters This phenomenon con- tributes to restrict the validity of the measurements and makes difficult a formulation of this function (Author) 118 A75-22214 A75-22207 Plane-polarized light in microspectrophotom- etry. F I Harosi and F E Malerba (National Institutes of Health, Laboratory of Neurophysiology, Bethesda, Md ) Vision Research, vol 15, Mar 1975, p 379-388 16refs Photoreceptor dichroism (the anisotropic absorption of plane- polarized light by sideways-illuminated visual cells) as measured microspectrophotometncally is analyzed assuming noncollimated measuring light The analysis postulates that the angular distribution of light rays of the measuring beam and the angular distribution of transition moments of the photoreceptor chromophores are governed by independent processes The interaction between light and pigment is assumed to be restricted to absorption (or transmission) such that it leaves the independence of the two probability distributions unaffected The resulting separability of the variables of the two processes leads to mathematical simplifications Measured dichroic ratio is precisely interpreted in terms of axial extinction and condenser aperture Mathematical appendices concerning the distri- butions of polarization vector in condenser aperture cone and of transition moment vector in cylindrical photoreceptor cell are included S J M A75-22208 Spatial summation of foveal increments and decrements. T E Conn and D J Lasley (California, University, Berkeley, Calif ). Vision Research, vol 15, Mar 1975, p 389-399 24 refs Grant No NIH-FR-7006 The findings cited reveal that the same kind of failure of summation that occurs in the spectral and temporal domains (i e, the weakness In Ricco's law) also appears in the spatial domain Stimuli used were luminance increments or decrements of two targets with varying angular separation. At small separations, increment-increment combinations were detected most easily, at intermediate separations, increment-decrements, and at large separa- tions, all stimulus combinations were equally detectable Inhibitory effects were inferred from the intermediate results A proposed model postulates differencing channels that carry information independent of that found in the summing channels This model applies in the wavelength and time domains as well S J M A75-22209 Light adaptation and the saturation of colours. A Valberg (Oslo, University, Oslo, Norway) Vision Research, vol 15, Mar 1975, p 401-404 7 refs Research supported by the Norwegian Council for Science and the Humanities and Schwei- zenscher Nationalfonds zur Forderung der wissenschaftlichen For- schung The effect of the luminance of an achromatic surround on the saturation of central color stimuli has been measured by means of the haploscopic color matching method It was found that the opponent purity of the matching stimuli varied according to a power function of the luminance of the achromatic surround field The exponent is the same for all five stimuli tested A saturation index is defined that is a measure of the variation of saturation with adaptation luminance (Author) A75-22210 The role of on and off transmits In dttermin- ing th« psychophyiical spatial frequency response B Breitmeyer and B. Juleu (Bell Telephone Laboratories, Inc., Murray Hill, N.J) Vision Rnturch. vol. 15, Mar 1975, p. 411-415 18 refs. The transient vs sustained channel distinction was investigated by measuring the visual system's sensitivity to sinusoidal gratings of variable spatial frequency when the onsets and/or offsets of their presentations were either abrupt or gradual It was found that the abrupt presentations increased contrast sensitivity at low spatial frequencies but left it unchanged at high frequencies relative to the gradual presentations It was also discovered that at low spatial frequencies, a presentation having an abrupt on- and gradual offset increased contrast sensitivity relative to one having a gradual onset and an abrupt offset I e , the sensitivity increase at low frequencies was primarily due to the abrupt onset. These results are analogous to those obtained with different temporal frequencies and sharp or blurred spatial windows SJ M. A75-22211 Stereopsis with large disparities - Discrimina- tion and depth magnitude. J M Foley, T H Applebaum (California, University, Santa Barbara, Calif.), and W A Richards (MIT, Cambridge, Mass) Vision Research, vol 15, Mar 1975, p 417-421 20 refs Grants No NIH-EY-00666, No NIH-EY-00742 Depth discrimination and perceived depth magnitude (indicated by a manual pointing response) were studied for disparities from 0.5 to 8 deg For briefly exposed targets, discrimination and depth magnitude yield somewhat different functions of disparity Discrimi- nation begins to decline when depth magnitude is still increasing This suggests that the variance of the depth signal increases faster than the magnitude of the signal This result is consistent with the notion that stereoscopic processing involves the pooling of the activity of disparity detectors (Author) A75-22212 The spatial Broca-Sulzer and sensitization effects for foveal viewing. K E Higgms (Pennsylvania College of Optometry, Philadelphia, Pa) and E J Rinalducci (Virginia, University, Charlottesville, Va ) Vision Research, vol 15, Mar 1975, p 423-425 8 refs U S Coast Guard Grant No 83635, Grant No NIH-EY-00353 The results of this experiment show that the spatial Broca-Sulzer effect and the Westheimer sensitization effect cannot be considered synonimous That is, variation m the apparent brightness of a circular stimulus field with change in field diameter and increment threshold variation with change in diameter are different phenomena In order to compare the two effects at similar levels of retinal illuminance, the illuminance needed to produce a constant brightness response as a function of stimulus size was first determined, then it was ascertained whether the combinations of these equally-bright area- retinal illuminance combinations were also equivalent with respect to their effects on the visibility of a small, brief increment-flash. SJM A75-22213 The role of positional and orientational dis- parity cues in human fusional response J C Wright and A E Kertesz (Northwestern University, Evanston, III ) Vision Research, vol 15, Mar 1975, p 427-430 9 refs Grant No NIH-EY-1055. The purpose of the study was to isolate the two types of torsional disparity cues, positional vs orientational, in order to determine their relative effectiveness in evoking human cyclofusional response Orientational disparities alone elicited the smallest fusional ranges, positional and orientational cues together, intermediate fusional response, and positional cues alone, the greatest response. Cyclofusional stimulation affords an opportunity to observe the central mechanism of the brain isolated from the compensatory eye movements present when the fixation point is not stationary S J.M. A/3-22214 The fluttering heart' and spatio-temporal characteristics of color processing. I • Reversibility and the influence of luminance. II - Lateral interaction* across the chromatic border. M W. von Grunau (Toronto, University, Toronto, Canada) Vision Research, vol 15, Mar 1975, p 431-440 41 refs National Research Council of Canada Grant No A-0001 The first part of the project consisted of two experiments The first experiment showed that the effect was reversible, i e , that both a red target on a blue background and a blue target on a red background are delayed This finding discounts a theory based on the differential latencies of the rods and cones The second experiment showed that luminance differences were not a necessary or sufficient condition for the fluttering heart effect, whereas color differences were both a necessary and sufficient condition for the phenomenon. Thus the fluttering heart arises from a genuine delay in the visual system and not from a phase difference In the second part of the project it was demonstrated that lateral interactions between the 119 A75-22215 color processing mechanisms across the chromatic target-background border are responsible for the lags these lags were eliminated by placing a black border around the colored target Findings from both parts of the project correspond with literature data SJM A75-22215 Graded, unitary and eye movement potentials in lateral geniculate nucleus following reticular stimulation J B Munson, C J Van Hartesveldt, and D C Spray (Florida, University, Gainesville, Fla ) Vision Research, vol 15, Mar 1975, p 443-446 22refs NSF Grant No GB-7622, Grant No NIH-MH-10320-08 A75-22216 Precise recording of human eye movements H Collewijn, F van der Mark, and T C Jansen (Erasmus University, Rotterdam, Netherlands) Vision Research, vol 15, Mar 1975, p 447-450 A modification of the Robinson method of measuring eye movements (by mounting an induction coil on a scleral contact lens and generating an a c magnetic field around the subject's head, which induces an a c potential in the coil that is variable with eye position) is described Instead of a full lens, only an ocular ring is mounted on the hmbic area, concentric to the cornea Slipping is much less frequent, the cornea bulges less, and the subjects are more comfortable than in the original method Results of measurements with the new carrier system show a satisfactory correlation between eye movement measurements and inputs to an oscilloscope spot followed by the eye S J M A75-22217 What causes decay of pattern-contingent chromatic aftereffects D M MacKay and V MacKay (Keele, University, Keele, Staffs, England) Vision Research, vol 15, Mar 1975, p 462-464 Evidence is presented in favor of the explanation that a night's sleep arrests the normal process of decay rather than refreshes the read-out mechanism In the first of two experiments, exposure to red and green gratings before sleep was accompanied by little or no decay of the pattern-contingent chromatic aftereffects (PCCAs) during 6 or 8 hours of sleep The second experiment determined that absence of optical input, and not sleep per se or darkness, was responsible for the lack of decay SJM A7S-22296 Differing responses to hypercapma and hypoxia following pneumotaxic center ablation. W M Saint John (Arkansas, University, Little Rock, Ark I Respiration Physiology, vol 23, Jan 1975, p 1-9 20 refs Grant No NIH-5-S01-RR-05350 The main purpose of the present report was to define more concretely the differential brain stem integration of hypoxic and hypercapnic stimuli by examination of hypoxia-mduced respiratory alterations following pneumotaxic center ablation under conditions of isocapnia Experimental animals exhibited lower hypercapma- and hypoxia-mduced minute volumes than did control animals at end-expired oxygen partial pressures above 65 mm Hg Below 65 mm Hg, minute volumes of experimental animals became indistinguish- able from those of control animals Control brain stem lesions produced no significant respiratory alterations It was concluded that the pneumotaxic center constitutes an integral component of the central chemoreceptor CO2-H+ controlling subsystem SJM A75-22297 Hyperoxic hyperventilation in carotid- drafferented cats. M J Miller and S M Tenney (Dartmouth College, Hanover, NH) Respiration Physiology, vol 23, Jan 1975, p 23-30 19 refs Grant No NIH-HL-02888-17 Breathing changes resulting from carotid sinus nerve section (chemo-deafferentation) were studied Normal air ventilation, tidal volume, and frequency decreased and partial tracheal C02 pressure increased in deafferented cats relative to intact cats Hyperoxic breathing parameters did not alter significantly relative to normoxic parameters in intact cats, but a dramatic increase in ventilation and tidal volume and decrease in C02 partial pressure occurred due to hyperoxia relative to normoxia in deafferented animals This experiment explains the transient reduction in ventilation following hyperoxic breaths in normal animals that is known to occur A hypoxic drive center (the chemoreceptor) is inactivated in 100% oxygen Moreover, central mechanisms are in some manner stim- ulated by hyperoxia, thus the result in deafferented cats SJM A75-22298 Hypoxia-mduced tachypnea in carotid- deafferented cats. M J Miller and S M Tenney (Dartmouth College, Hanover, NH) Respiration Physiology, vol 23, Jan 1975, p 31-39 16 refs Grant No NIH-HL-02888-16 The results of this study support the proposal that hypoxia, in the 7-16% oxygen range, in a physiological manner, depresses central tidal volume and stimulates central respiratory frequency generation in unanesthetized, chemodeafferented cats These findings challenge the hypothesis that hypoxia exerts only depressant actions on central regulatory mechanisms, i e , that the peripheral chemoreceptors are responsible for all excitatory responses SJM A75-22299 Vagal modulation of respiratory control dur- ing exercise S Lahiri, S S Mei, and F F Kao (Downstate Medical Center, Brooklyn, N Y ) Respiration Physiology, vol 23, Jan 1975, p 133-146 16 refs Grants No NIH-HL-04032, No NIH-HL-08805 Respiratory response to chemical stimuli and to exercise was tested in normal and vagotomized dogs Hypercapnic and/or hypoxic arterial stimuli increased both depth and rate of ventilation during rest and exercise in intact animals After bilateral vagotomy chemical drive increased ventilation mostly by depth and little by rate Muscular exercise, however, largely restored frequency response in the experimental group Separate mechanisms are therefore postu- lated for chemical and exercise respiratory influences the volume- related vagal reflex for the former, and presumably the bulbo- pontine control for the latter S J.M A75-22399 G-tolerance and protection with anti-G suit concepts R R Burton and R W Krutz, Jr (USAF, School of Aerospace Medicine, Brooks AFB, Tex ) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 119-124 12 refs The effects of pressurizing various functional units of an experimental pneumatic-lever anti-G suit (PLS, frequently called a capstan suit) on +Gz tolerance and protection were determined at relaxed +Gz levels and during +6 Gz for 60 sec • termed high sustained G (HSG) Measured were +Gz tolerance and protection on nine male subjects using light loss criteria, increases in heart rate during HSG and subjective analysis These data from the PLS were compared with similar findings obtained from the same persons wearing the USAF standard anti-G suits (CSU-12/P) with and without suit pressunzation Abdominal bladder inflation offered the highest increase in relaxed +Gz tolerance (0 7 G) whereas leg pressunzation offered the greatest anti-G protection (heart rate criterion and subjective analysis) at HSG Specifically regarding the PLS, it was found superior to the CSU-12/P at HSG regarding both +Gz protection and subject comfort (Author) A75-22400 Reaction time performance with and without backscatter from intense pulsed light A R Zemer and G A Brecher (Oklahoma, University, Oklahoma City, Okla ) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 125-127 17 refs US Department of Transportation Contract No FA71-WA-2545 Twenty male graduate students, 22-30 years of age, were assigned by a table of random numbers to two groups, and visual reaction-time performance with and without backscatter was mea- sured The subjects' task was to observe a 5-cm dial face whose needle deflected 2 mm either left or right of center Meter deflections were either preceded by 10 light pulses from a strobe or they were not preceded by light pulses Two measures of per- formance were recorded (1) voice reaction time in milliseconds, and 120 A75-22410 (2) errors The error rate (3 5%) did not discriminate between groups or conditions The reaction time (RT) was almost twice as long with backscatter as without backscatter (1,556 ms and 854 ms, respective ly) This RT increase was highly reliable statistically The variability of RT performance increased markedly with backscatter In practical terms, the results suggest that the effects of backscatter could induce a cumulative performance decrement in instrument scanning which might endanger air safety (Author) A75-22401 Telemetric control of heart adaptation during automatic and free-fall parachute jumps R Oeroanne, A Cession Fossion, J Juchmes, J C Servais, and J M Petit (Liege, University Liege, Institut E Malvoz, Belgium) Aviation, Space, and Environ mental Medicine, vol 46. Feb 1975. p 128-131 12refs Telemetered heart rate recordings have been obtained from 17 parachutists (6 during automatic jumps, 11 during free-fall jumps) Catecholamme (adrenaline and noradrenalme) concentrations have been measured in urine and plasma of six of these subjects No difference appears between heart rates recorded in the two types of jumps at egress and at parachute deployment On the other hand, higher heart-rate values are recorded during automatic jumps during descent and at ground impact The urine catecholamme analysis after jump shows a statistically significant increase in adrenaline and noradrenalme concentrations It is suggested that simulation of the orthosympathetic system is due to two facts muscular work performed during jumping and the emotional stress which it involves The importance of these two causes varies with the jump circumstances (Author) Srivastava, M M L Kumria, S K Grover, K Sridharan, and M S Malhotra (Defence Institute of Physiology and Allied Sciences, Delhi, India) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 144-146 15refs A75-22406 Somatic-evoked brain responses as indicators of adaptation to nitrogen narcosis T D Langley and R W Hamilton, Jr (Union Carbide Corporate Research Laboratory, Tarrytown, N Y ) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 147-151 23 refs NOAA-supported research. Contracts No N00014-69-C-0405, No N00014-72-C-0189 Two two-week experimental pressure-chamber exposures to nitrogen-oxygen breathing mixtures afforded an opportunity to study adaptation to nitrogen narcosis Somatic-evoked brain re- sponses induced by electrical stimulation of the median nerve in the wrist were processed on-line with a signal averager The N1P2 interval was seen generally to be reduced in amplitude as a result of exposure to increased nitrogen partial pressure Compressions with air were made from sea level and saturation to 200, 250 and 300 ft of sea water (fsw) equivalent (61, 76, and 91 m) The decrement was found to be less, for equivalent exposures, in subjects who had been saturated at the pressure of 90 and 120 fsw (27 and 36 m), this is interpreted as evidence of a nonspecific adaptation Less adaptation was seen from 30 and 60 fsw (9 and 18 m) These results are consistent with performance tests on the same exposures, and with subjective impressions Saturation with 3 or 4 atm of nitrogen may permit somewhat deeper diving, without serious narcosis, than is possible from sea level (Author) A75-22402 * Changes in serum proteins, viscosity, ana protein-bound carbohydrates during prolonged bedrest D E McMillan (Sansum Medical Research Foundation, Santa Barbara, Calif ) and C L Donaldson (U S Public Health Service Hospital, San Francisco, Calif ) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 132-135 20 refs Grant No NGR-05-073-001 A75-22403 * Changes in haptoglobm and other plasma proteins of rats during exposure to pure oxygen at 760 torr B W Grunbaum (California, University, Berkeley, Calif ) and H A Leon (NASA, Ames Research Center, Moffett Field, Calif) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 136-140 13 refs Grant No NGL-05-003-024. A75-22404 Characteristics of the electrocardiogram under physical and emotional stress in man P V Simonov, M V Frolov, and E P Svindov (Academy of Sciences, Institute of Higher Nervous Activity and Neurophysiology, Moscow, USSR) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 141 143 5 refs. The changes in the length of the interval R-R and the heart rate are widely used for estimation of man's physical state However, this ECG index has several drawbacks, including a relatively low sensitivity and non-specificity of changes under different states attention and fatigue, physical and emotional stress, etc Moreover, one and the same factor, e g , emotional stress, can lead to both a decrease and an increase in the heart rate, Hence, it is necessary to find other more adequate ECG parameters which would enhance the reliability and accuracy of assessment of man's state An analysis of data found in the literature and the results of preliminary experi- ments have shown that the amplitude of the T peak and the duration of the R-T interval of the ECG can be used as such parameters (Author) A75-22405 Glucose tolerance of lowlanders during pro- longed stay at high altitude and among high altitude natives K K A75-22407 Determination of body fluid compartments by electrical impedance measurements P Jenm, J Lenoir, C Roullet, A L Thomasset, and H Ducrot (Lyon I, Umversite, Lyons, Hopital Necker, Paris, France) Aviation, Space, and Environmental Med- icine, vol 46, Feb 1975, p 152-155 11 refs Translation The ratio of the LF and HF impedances appears to be an excellent and simple tool for investigation of liquid specimens, either of the total human body, taking into consideration global im- pedances, or of a particular organ, taking into consideration local impedances A study was made of the global impedance ratio variations with age In most cases, not only does the ratio decrease, but there is extreme difficulty in reestablishing normal values Whatever action is undertaken, it seems that the intracellular liquid compartment remains insufficient with respect to that of the extracellular liquid compartment It is as if the water will not enter in the cells or as if it were no longer retained within the cells Finally, with this concept of impedance ratios, a promising experimental method has been found which will, perhaps, enable better investiga- tions in this field - (Author) A75-22408 Investigation of electrical impedance variations of dog brain tissue during experimental metabolic disturbances J Lenoir, C Roullet, P Jenm, A L Thomasset, and M Pellet (Lyon I, Umversite, Lyons, France) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 156-160 12 refs Translation A75-22409 Effects of increased partial pressures of oxygen on the embryonic and post-embryonic development of drosophifa melanogaster S L Smith and S F Gottlieb (Purdue University, Fort Wayne, Ind ) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 161-169 22 refs A75-22410 Emesis in monkeys following exposure to ionizing radiation G R Middleton and R W Young (U S Defense Nuclear Agency, Armed Forces Radiobiology Research Institute, Bethesda, Md ) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 170-172 15 refs 121 A75-22411 There were 129 male rhesus monkeys (Macaca mulatta) exposed to prompt radiations (neutron/gamma = 04 and pulse width = 50 ms) ranging from 700 to 5600 rad (midhead dose) The animals were fasted 18 h preexposure and observed for incidence of vomiting for 2 h postexposure For doses less than 1000 rads the number of animals that vomited increased directly with dose Above 1000 rads, the number of animals that vomited decreased with increasing dose The total number of vomits per dose group followed a nearly identical pattern to the incidence of emesis In all dose groups, most of the emetic episodes occurred between 20 and 50 mm postirradiation (Author) A7S-22411 Human amino acid excretion patterns during and following prolonged multiitressor teiti. H B Hale, J B Garcia, Jr, J P Ellis, Jr, and W f Storm (USAF, School of Aerospace Medicine, Brooks AFB, Tex ) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 173-178 13refs As a feasibility study, two men were tested in a series of simulated flights which comprised a factorial experiment Physiologic data were collected during a 2-d baseline period, four 36-h experimental periods, and four recovery periods The experimental conditions were as follows (1) uncomplicated simulated flight, (2) flight complicated by extreme environment dryness, (3) flight complicated by mild hypoxia, and (4) flight complicated by both dryness and hypoxia Five other men were studied under baseline conditions and during a 48-h simulated flight complicated by hypoxia Urinary nitrogeneous metabolites, including individual ammo acids, were examined for sensitivity to the stressor complexes Certain of the ammo acids had high stressor sensitivity, tending to differentiate the effects of the single, double, and triple stressor complexes They also differentiated the physiologic states in the experimental and recovery periods (Author) A7S-22412 Climatologic aspects of obesity and thera- peutic semistarvation. H B Hale, J P Ellis, Jr., and E W Williams (USAF, School of Aerospace Medicine, Brooks AFB, Tex ) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 179-185 56 ref s Multifactor stress was studied, using obese men subjected to long-term (49-d) semistarvation in either a temperate or a hot climate The study was wide in scope, giving information on endocrine-metabolic effects of (1) uncomplicated obesity, (2) obesity in combination with climatic heat, (3) obesity plus semi- starvation, and (4) obesity combined with semistarvation plus climatic heat The test subjects - groups of 12 to 13 obese men - remained on a diet which provided 335-400 kcal/d and contained at least 45 g protein, 14 g carbohydrate, and 11 g fat Overnight urine specimens collected at 7-d intervals were analyzed for epmephrme, norepmephrme, 17-OHCS, ketones, urea, uric acid, creatmine, inorganic phosphate, sodium, and potassium Most of the physiologic response patterns in the tnple-stressor circumstance were unlike those in the double-stressor situation Thus, there was evidence of compounding of stressor effects Evidence of diminished sensitivity to heat appeared when obesity was lessened (Author) A75-22414 Catecholamme and phagocytic responses in infected mica exposed to hyperbanc helium-oxygen atmospheres W D Won (California, University, Berkeley, Calif ) and H C Ross (U S Navy, Naval Supply Center, Oakland. Calif) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 191-193 8 refs Research supported by the Bureau of Medicine and Surgery and U S Navy. A7S-22415 EEC criteria for flying fitness applied by the German Air Force Institute of Aviation Medicine. H Oberholz (Bundesmimsterium der Verteidigung, Flugmedizimsches Institut, Furstenfeldbruck, West Germany), J Kugler (Neurologische Klinik, Munich, West Germany), and W Jessberger (St-Hedwigshospital, Regensburg, West Germany) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 194-198 25 refs A re-evaluation of EEGs of more than 1000 applicants for flying training is presented All EEC abnormalities were re-evaluated by three EEC specialists Out of 1630 EEG records, 5 4% were classified as abnormal and, of these, 24 were found to have a bearing on flying qualification SW-vanants and paroxysms were cause for elimination in any case This study led to the adoption of the following policy any subject showing EEG abnormalities, possibly requiring a per- manent elimination, will undergo a second EEG by another examiner In cases with EEG anomalies, a followup EEG is done with a concurrent sensory-motor performance test This is supplemented by an evaluation of collateral cerebral circulation, using unilateral and bilateral compression of the vertebral and carotid arteries In cases without noticeable performance deficiencies, another EEG is done a year later in order to excluse a progression of the EEG anomalies (Author) A75-22416 Drug interactions - How to identify mem. T Q Davis (USAF, School of Aerospace Medicine, Brooks AFB, Tex ) Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 199-203 10 refs Interactions between therapeutic agents have been recognized as increasingly important causes of drug toxicity Combinations of certain drugs at their usual recommended dose may, under certain conditions, produce toxicity of life-endangering proportions While the recognition of drug toxicity resulting from interactions is of importance to all physicians, it is especially so for the clinician responsible for the welfare of those in the aerospace environment This paper attempts to provide a basis for the understanding and identifications of important drug interactions Guidelines are pro- vided to assist the clinician in his logical approach to the identifica- tion of drug interactions when serious drug toxicity is encountered in a patient Only with knowledge of the interaction can the thera- peutic regimen be altered so as to provide therapeutic levels of necessary drugs while avoiding toxicity (Author) A75-22417 Pseudo-mternudear oculomotor ophthalmo- plegia secondary to Guillam-Barri polyneuromtis simulating myasthema gravis in an air transport pilot. S Diamond, M F Leeds (Pan American World Airways, Inc , San Francisco, Calif ), and H E Schear Aviation, Space, and Environmental Medicine, vol 46, Feb 1975, p 204-207 7 refs A75-22454 • Ultrastructural studies on plasma membrane related secondary vacuoles in cultured cells. P G Mahlberg, F R Turner, C, Walkmshaw, and S Venketeswaran (Indiana University, Bloommgton, Ind ) American Journal of Botany, vol 61, Aug 1974, p 730-738 15 refs Contracts No NAS9-9211, No NAS9- 10947 A75-22455 * Depth of immersion as a determinant of the natnuresis of water immersion. M. Epstein (Miami, University, U S Veterans Administration Hospital, Miami, Fla , Howard Hughes Medical Institute), M Miller, and N Schneider (Miami, University, U S Veterans Administration Hospital, Miami, Fla ) Society for Experimental Biology and Medicine, Proceedings, vol 146, 1974, p 562-566 11 refs Research supported by the U S Veterans Ad- ministration, Grants No NIH-RR-261.No NGR-10-007-097 The current study was undertaken to further assess the contribution of an immersion-induced hydrostatic pressure gradient on the redistribution of blood volume The rate of sodium excretion by seated subjects was significantly increased by water immersion up to the chest and neck compared to waist immersion and controls These results are consistent with the hypothesis that whereas immersion to the level of the diaphragm merely cancels the 122 A75-22694 intravascular hydrostatic pressure gradient by providing an identical external gradient, immersion above the diaphragm level results in increased water pressure which tends to favor a shift in blood volume from the lower extremities S J M A75-22465 Constituents of human muscle in isometric fatigue. J Karlsson, C F Funderburk, B Essen, and A R Lind (St Louis University, St Louis, Mo ) Journal of Applied Physiology vol 38, Feb 1975, p 208-211 14 refs Contract No F33615-71-C 1320 Three subjects performed five successive isometric contractions to fatigue, the tension in any one experiment was constant at tensions varying from 20 to 80% of the maximal voluntary contraction (MVC) The interval between contractions was held constant at 11 mm Muscle biopsy specimens were obtained at the start of the experiment, after the first, fourth, and fifth, and before the second and fifth of the successive contractions The concentra- tions of ATP, CP, glycogen, and lactate were measured in each sample of muscle Changes in ATP and glycogen were insufficient to be held accountable for the development of isometric fatigue Changes in CP and lactate were large after fatigue at intermediate tensions, but those of CP were considered unlikely to be repsonsible for the fatigue At tensions of 30-50% MVC the increase in lactate could be responsible for fatigue either directly or by indirect changes in pH, at higher and lower tensions the possibility that lactate is directly implicated in the development of fatigue seems remote (Author) A75-22466 # Effect of physical training on the metabolism of thyroid hormones in man. A Balsam and L E Leppo (USAF, School of Aerospace Medicine, Brooks AFB, Tex ) Journal of Applied Physiology, vol 38, Feb 1975, p 212-215 14 refs A75-22467 # Assessment of the degradation of thyroid hormones in man during bed rest A Balsam and L E Leppo (USAF, School of Aerospace Medicine, Brooks AFB, Tex ) Journal of Applied Physiology, vol 38, Feb 1975, p 216-219 17 refs A75-22468 Sleep metabolism and age P Webb and M Hiestand (Webb Associates, Inc , Yellow Springs, Ohio) Journal of Applied Physiology, vol 38, Feb 1975, p 257-262. 20 refs Contract No F33615-72-C-1875 Continuous recordings were made of oxygen consumption and EEC, EMG, and EOG during two nights of sleep for 20 men who were between 19 and 63 yr old There was a linear decrease in overnight oxygen consumption with age, even though the older men slept less and woke more often than the younger ones On the first night, oxygen consumption was higher, and sleep stages less like normal than on the second In the second night data, individual oxygen consumptions averaged over the whole night ranged from 138 to 482 ml/mm No relationship appeared between stage of sleep and oxygen consumption level, but there was usually a decline in oxygen consumption in the first hour of sleep, and a slow rise in the 2-3 h before awaking Periodic breathing was observed in the men older than 45 yr (Author) independent of body weight There were significant interactions on the measured parameters between various combinations of altitude, OHP level, and duration of acclimatization While alterations in the metabolism of gamma-ammobutyric acid and high-energy com- pounds are common to both hypoxia and hyperoxia, the most plausible explanation of the results relates to the decrease in buffer base induced by hypoxic acclimatization which might have caused C02 potentiation of OHP symptoms (Author) A75-22470 Changes of thermal balance induced by passive heating in resting man R Henane and J Bittel (Ministere des Armees, Service de Sant6 des Armees, Lyons, France) Journal of Applied Physiology, vol 38, Feb 1975, p 294-299 24 refs Research supported by the Direction des Recherches et Moyens d'Essais and Service de Sant£ des Armees A75-22471 § Tissue oxygenation and splenic erythropoiesu during chronic hypoxia and hypercapnia. R G Streeter, W E Pepelko, and S M Cam (USAF, School of Aerospace Medicine, Brooks AFB, Tex ) Journal of Applied Physiology, vol 38, Feb 1975, p 309-314 21 refs Tissue (gas pocket) oxygen levels and erythropoietic activity were monitored in groups of rats chronically exposed to hypoxia, hypercapnia, or a combination of the two conditions Arterial gas tensions and pH were also measured Overall condition of the animals was assessed by comparison of growth rates with pair-fed controls Hypoxic-hypercapmc pocket oxygen pressure values were similar to normoxic-normocapmc values, but greater than m hypoxia- normocapma, and less than in normoxia-hypercapma Erythropoietic activity during hypoxia-hypercapma ceased and the rats had a growth rate significantly below that of other groups While chronic C02 does increase tissue (pocket) oxygenation to near normal levels, the hypoxic-hypercapnic rats evidenced greater detrimental effects than did rats in hypoxic or hypercapnic environments (Author) A75-22495 ff Mathematical modelling, simulation and experimental testing of biomechamcal system crash response. A I King and C C Chou (Wayne State University, Detroit, Mich ) American Institute of Aeronautics and Astronautics, Annual Meeting and Technical Display, 11th, Washington, DC, Feb 24-26, 1975, Paper 75-272 19 p 102 refs Contract No N00014-69-A-0235-0003 A review of mathematical models simulating biodynamic response to impact acceleration is given along with the associated experimental validation studies that have been performed The types of models surveyed include gross motion simulators, head injury models, and spinal and thoracic models Sufficient details are provided to indicate to potential users their applicability and relative cost (Author) A75-22469 Relative susceptibility of altitude-acclimatized mice to acute oxygen toxicity. P Hall, C L Schatte, and J W Fitch (Colorado State University, Fort Collins, Colo ) Journal of Applied Physiology, vol 38, Feb 1975. p 279-281 11 refs The influence of hypoxic acclimatization at altitudes of 0, 5,000, or 15,000 ft on the relative susceptibility to acute oxygen vpoisoning was determined in 288 adult female mice After acclimati- zation periods of 1, 2, 4, or 8 wk, the mice were exposed to oxygen at high pressures (OHP) of 4, 6, or 9 ATA, and the times to convulsion and death were recorded A factorial analysis of variance indicated that altitude and OHP level had inverse, log-linear effects on both parameters The duration of acclimatization progressively decreased the time to death The onset of convulsions and death was A75-22694 Long-wavelength analysis of plane wave ir- radiation of a prolate spheroid model of man. C H Durney, C C Johnson, and H Massoudi (Utah, University, Salt Lake City, Utah) IEEE Transactions on Microwave Theory and Techniques, vol MTT-23, Feb 1975, p 246-253 11 refs USAF-supported research An electromagnetic (EM) field perturbation technique is used to find internal electrical fields and the absorbed power of a prolate spheroid being irradiated by a plane wave when the wavelength is long compared, to the dimensions of the spheroid The results show significant differences in the power-absorption patterns with changes in the orientation of the spheroid with respect to the incident EM fields Calculations of the power absorbed by a prolate spheroid model of man are given (Author) 123 A75-22715 A75-22715 MAY 1975 Typical Subject Index Listing SUBJECT HEADING TITLE EXTENSION PLiHTS (BOTAHY) 1 JProbleas of space biology. Volume 27: ^ Badiobiology and genetics of arabidopsis effects of radiation and weightlessness CHASA-TT-P-158U9] H75-10679 The title is used to provide a description of the subject matter When the title is insufficiently descriptive of the document content a title extension is added separated from the title by three hyphens The NASA or AIAA accession number is included in each entry to assist the user in locating the abstract in the abstract section of this supplement If applicable a report number is also included as an aid in identifying the document ABIOGEHESIS Origins of biological information and the genetic code A75-21001 ABSOBBEHTS Environmental carbon dioxide control [SAE PAPEB 710931] A75-2274U ACCELEBAIIOH PBOTECTIOH Be-evaluation of a tilt-back seat as a means of increasing acceleration tolerance A75-2089H ACCELEKAIIOH STRESSES (PHISIOLOGT) Re-evaluation of a tilt-back seat as a means of increasing acceleration tolerance A75-20891 Influence of G-forces on the blood vessels in the nervous system of the rabbit H75-17059 Influence of G-forses on the vessels in the retina, kidney and uterus of the rabbit N75-17060 Influence of G-forces and nypodynamia on the portal system of the liver 875-17061 Influence of G-forces on the neuroreceptor apparatus of the cardiovascular system N75-17062 Influence of G-for~es on venous and nervous systems N75-1706U Dynamics of morphological manifestations of reactions of the organism under conditions of hypergravitation N7S-17065 Morphological and -ytocheaical indices of the stress reaction in the blood system under the influence of G-forces N75-17068 Structural and cytochemical investigations of the gravity receptor under conditions of relative rest and following exposure to accelerations K75-17069 Influence of maximum tolerable transversely-directed G-forces on the ultrastructure of intercellular and intracellular channels in the adenohypophysis 1175-17070 Change in the intraorganic nerve apparatuses of muscles under conditions of the combined action of a dc magnetic field and acceleration N75-17073 ACCELEBATIOH IOLEBAHCE Be-evalnation of a tilt-back seat as a means of increasing acceleration tolerance A75-20894 G-tolerance and protection with anti-G suit concepts A75-22399 Adaptation of the vascular system to extremal factors acceleration stress and tolerance N75-17058 Influence Df G-forces on the vessels in the retina, kidney and uterus of the rabbit H75-17060 Morphological manifestations of the stress reaction under the influence of transversely directed G-forces H75-17066 Human engineering studies of high speed pedestrian conveyors using motion simulator [ABC-CP-1278] H75-17096 ACCEPTABILITY Annoyance and acceptability judgements of noise produced by three types of aircraft by residents living near JFK Airport »75-17092 ACCOHBODATIOi The accommodated proportion of a potential user population - Compilation and comparisons of methods for estimation workspace design based on anthropometric variables A75-19701 ACOUSTIC iTTEBUATIOB Pure-tone, third-octave, and octave-band attenuation of ear protectors A75-20127 ACTINOMTCETES Inhibition of germination of Actinonycetes spares in a stationary magnetic field [ NASA-TT-F-16203] N75-17075 ADAPTATION Intersensory generalization and conditioning in adaptation to visual tilt A75-19950 Telemetric control of heart adaptation during automatic and free-fall parachute jumps A75-22401 Somatic-evoked brain responses as indicators of adaptation to nitrogen narcosis A75-22406 ADAPTIVE COHTBOL A hierarchical concept for man-machine communication A75-19714 ADRENAL GLAND Dynamics of morphological manifestations of reactions of the organism under conditions of hypergravitation N75-17065 ADBENAL HETABOLISH - Adrenocortical activity and urinary cyclic AHP levels - Effects of hypobaric hypoxia A75-20893 Influence of maximum tolerable transversely-directed G-forces on the ultrastructure of intercellular and intracellular channels in the adenohypophysis N75-17070 ADBEHOCOBTICOTBOPIH (ACTH) Adrenocortical activity and urinary cyclic AMP levels - Effects of hypobaric hypoxia A75-20893 AEROSOLS A theory of aerosol deposition in the human respiratory tract A75-21569 1-1 ABBOSPACB HBDICIHB SUBJECT IBDBX AEBOSPiCB BBDICIHE EEG criteria for flying fitness applied by the German Air Force Institute of Aviation Hedicine A75-22415 Space mission in Tashkent joint conference on space biology and medicine [NASA-TT-F-16161] H75-17085 Index to FAA Office of Aviation Hedicine reports: 1961 through 1973 [AD-779353] H75-17087 AEROSPACE SYSTEMS Hunan factors role in equipment definition and facility layout for the Space Computational Center and the NOfiAD Computer System Improvement Program A75-19722 AFFEBBHT NEBVOOS SYSTEHS Basal forebrain and hypothalamic connections to frontal and parietal cortex in the rhesus monkey A75-22010 AFTSBIHAGES Bhat causes decay of pattern-contingent chromatic aftereffects A75-22217 AGE FACTOB Fine structural changes in the lateral vestibular nucleus of aging rats A75-21042 Sleep metabolism and age 475-22468 AIB FILTERS Contribution to the guestion of the contamination of suspended substances filters by germs [NASA-TT-F-16149] N75-17074 AIB NAVIGATION Navigation and flight proficiency under Nap of the Earth conditions as a function of aviator training and experience treetop helicopter flight A75-19689 AIB POLLUTION Physiological effects of air pollutants in human.. subjected to secondary stress [PB-236151/7] N75-17089 AIB PURIFICATION An electrochemical device for carbon dioxide concentration - System design, performance and steady state analysis [SAE PAPER 740932] A75-22745 AIB SAHPLIHG Microbiological sampling of the spacecraft atmosphere during a simulated Skylab mission A75-20888 AIB TRAFFIC CONTROL Personality and physiological correlates of performance decrement on a monotonous task requiring sustained attention air traffic control [AD-777825] N75-17094 Physiological responses \ [AD-777838] N75-17095 AIRCRAFT DESIGH , Design Option Decision Tree -, A method for schematic analysis of a design problem and integration of human factors data \ A75-19700 AIBCB1FT IHSTBOHBHTS \ The effects of certain gimbal orders and workloads on target acquisition A75-19683 AIBCBAFT LANDING Effect of cessation of late-night landing noise on sleep electrophysiology in the home [NASA-CB-132543] N75-16220 AIBCBAFt HANEUVBBS Development of a training model for naval flight students A75-19679 The effect of scena rotation on target acquisition image stabilization of electro-optical displays A75-19682 AIBCBAFT NOISE Effects on sleep of noise from two proposed STDL aircraft [NASA-CB-132S64] N75-16219 AIRCRAFT PILOTS Pseudo-internuclear oculomotor ophthalmoplegia secondary to Guillain-Barre polyneuronitis simulating myasthenia gravis in an air transport pilot A75-22417 AIRCRAFT SAFETY Some highlights of aircraft passenger behavior research A75-20899 Beaction time performance with and without backscatter from intense pulsed light A75-22400 ALGAE The Performance and capabilities of terrestrial organisms in extreme and unusual gaseous and liquid environments [NASA-CB-142192] N75-17077 ALTITUDE ACCLIHATIZATIOH Organ fluid changes and electrolyte excretion of rats exposed to high altitude A75-20885 Slucose tolerance of lowlanders during prolonged stay at high altitude and among high altitude natives A75-22405 Relative susceptibility of altitude-acclimatized mice to acute oxygen toxicity A75-22469 Morphology of the internal organs in the adaptation of animals to high-altitude conditions H75-17072 ALTITUDE SIBOLATION Effects of long-term exposures to 100* oxygen at selected simulated altitudes on the pulmonary surfactant in mice A75-20883 Adrenocortical activity and urinary cyclic AHP levels - Effects of hypobanc hypoxia A75-20893 ALVEOLAR AIR Tentilatory effects of hypoxia and their dependence on C02 pressure A75-21565 A theory of aerosol deposition in the human respiratory tract A75-21569 AHINO ACIDS 'Origins of biological information and the genetic code A75-21001 Human ammo acid excretion patterns during and following prolonged multistressor tests A75-22411 ABGIOGBAPBY Normal coronary angiography in an aircreuman with serial exercise test changes A75-20896 ANIBALS Biosatellite: Besults of an experiment [BLL-M-23466-(5828.4F) ] N75-17056 Effect of extremal factors on the structure of the organs and tissues [NASA-TT-F-791 ] N75-17057 Adaptation of the vascular system to extremal factors acceleration stress and tolerance N75-17058 Bistological analysis of tissue structures of the internal organs of steppe tortoises following their exposure to spaceflight conditions while circumnavigating the moon aboard the Zond-7 automatic station H75-17063 Morphology of the internal organs in the adaptation of animals to high-altitude conditions N75-17072 ANTBROPOBBTRY The accommodated proportion of a potential user population - Compilation and comparisons of methods for estimation workspace design based on anthropometric variables A75-19701 ANTIGBAVITY G-tolerance and protection with anti-G suit concepts A75-22399 AORTA Data processing programs for nonlinear analysis of aortic flow in living dogs [HASA-CB-142085] N75-17078 1-2 SUBJECT IB DEI BIOCLIHATOLOGI APOLLO PLIGHTS Plasna thyroxine changes of the Apollo crewmen A75-20892 APOLLO TELESCOPE HOUBI An evaluation of the ATS man/machine interface. Phase 3: Analysis of SL-3 and SL-U data [HASA-CB-120586] H75-16226 APOLLO 15 FLIGHT Effect of potassium depletion in normal Dales - An Apollo 15 simulation A75-20884 AEGOH Continued investigation of kinetic aspects of bone mineral metabolism determining body calcium by measuring argon after neutron irradiation [NASA-CR-1IH607] 1175-17083 ARTIFICIAL BEAST VALVES Nuclear-powered artificial heart prototype system development program: phase 3 [COO-30113-16] H75-1621U ASTBOHADT LOCOMOTION Manned maneuvering unit mission definition study. Volume 1: MHO applications analysis and performance requirements [NASA-CR-1U1631] H75-17106 Manned maneuvering unit mission definition study. Volume 3: MHO ancillary support equipment and attachment concepts [HASA-CR-1U1633] N75-17108 ATTBHTIOR Basic attention measures as predictors of success in flight training A75-19678 The measurement of attention capacity through concurrent task performance vith individual difficulty levels and shifting priorities A75-19710 Evoked potential correlates of selective attention with multi-channel auditory inputs A75-20294 Personality and physiological correlates of performance decrament on a monotonous task requiring sustained attention air traffic control [AD-777825] H75-17094 ATTITUDE IHDICATOBS The transition of experienced pilots to a frequency-separated aircraft attitude display - A flight experiment A75-19680 AODITOBI DEFECTS The relation of noise exposure to noise induced hearing damage A75-21797 ADDITOBY PEHCEPTIOH Effect of sampling procedure upon the performance of an electrical model of auditory detection A75-20122 Spectral cues used in the localization of sound sources on the median plane external ear sensitivity for elevation perception A75-20124 Transformation of sound pressure level from the free field to the eardrum in the horizontal plane A75-20126 Difference thresholds for interaural delay A75-20795 AODITOBI SEHSATIOB ABEAS Hypothesis on the function of the crossed olivocochlear bundle A75-20128 ADDITOBY STIHOLI Two-tone distortion products in a nonlinear nodel of the basilar membrane A75-20123 Bate versus level functions for auditory-nerve fibers in cats fone-burst stimuli A75-20125 Hypothesis on the function of the crossed olivocochlear bundle A75-20128 Determination of the transfer function of the external ear by an impulse response measurement A75-20130 Evoked potential correlates of selective attention with multi-channel auditory inputs 475-2029» Gelation of the loudness function to the intensity characteristic of the ear A75-20796 Beactions of neurons in the second auditory cortical area to sound stimulation A75-20918 Characteristics of conditioned reactions in different phases of natural human sleep A75-21522 ADOITOBT TASKS Changes in detection measures and skin resistance during an auditory vigilance task A75-22200 AUTOMATIC TEST BQDIPHBHT Automatic methods of seismoactogram analysis when studying spontaneous and evoked motor activity A75-21523 B B-1 AIBCBAFT Systems approach to training /SAT/ for the B-1 aircrew A75-19707 BACKGROUND BOISE Pattern and motion characteristics of visually time-compressed target detection in static noise A75-19681 BACKSCATTBBI8G Reaction time performance with and without backscatter from intense pulsed light A75-22400 BACTEBIA Correlation between thermal death and membrane fluidity in Bacillus stearothermophilus A75-21003 Contribution to the question of the contamination of suspended substances filters by germs [NASA-TT-F-16149] N75-1707* Frequency of differentiated sectored colonies among bacteria in suspension in the outside air observed over three years (its correlation with various parameters: Rolf's numbers, solar flux, geomagnetic activity, fluctuating phenomena [BASA-TT-F-16202] B75-17076 BACTEBICIDES Advance prototype silver ion water bactericide system [HASA-CH-141557] B75-16228 BED BEST Changes in serum proteins, viscosity, and protein-bound carbohydrates during prolonged bedrest A75-22402 Assessment of the degradation of thyroid hormones in man during bed rest A75-22H67 Study of bone mineral metabolism during body immobilization, bed rest, and space flight [NASA-CR-141608] ,' H75-17082 BEHAVIOB ' A model of psychosocial hypertension showing reversibility and progression of cardiovascular complications A75-21175 BIBLIOGBAPBIES Index to FAA Office of Aviation Medicine reports: 1961 through 1973 [AD-779353] N75-17087 BIHOCOLAB VISIOB Stereopsis with large disparities - Discrimination and depth magnitude A75-22211 The role of positional and orientational disparity cues in human fusional response A75-22213 BIOCBBBTSTBY The heterogeneity of hemoglobin in man and animals review A75-21474 Chemical index to fitness (biochemical correlates of strass in specialized populations) [AD-787829] B75-16222 BIOCLIBATOLOGI Climatologic aspects of obesity and therapeutic semistarvation A75-22412 1-3 BIOCOHIBOL SYSTEBS SUBJECT ISDBt BIOCONIHOL SISTERS [Inclocklike behaviour of biological clocks A75-21166 Vagal modulation of respiratory control during exercise 475-22299 BIODY8AHICS Mathematical modelling, simulation and experimental testing of biomechanical system crash response [AIAA PAPER 75-272] A75-22195 Problems associated with studies of vibrations in man-machine systems A75-22715 BIOELECTRIC POIEHTIAL Evoked potential correlates of selective attention with multi-channel auditory inputs A75-20291 The contingent negative variation during a memory retrieval task evoked bioelectric potentials A75-20295 Graded, unitary and eye movement potentials in lateral geniculate nucleus following reticular stimulation A75-22215 BIOELECTHICITT Determination of body fluid compartments by electrical impedance measurements 475-22107 Investigation of electrical impedance variations of dog brain tissue during experimental metabolic disturbances A75-22108 BIOENGINEEBIBG An engineering analysis of the human spinal column spinal braces [PB-235383/7] N75-16215 Teleoperator/robot technology can help solve biomedical problems [NASA-CR-112089] N75-17099 BIOINSTHDMEHT&TIOH Ophthalmologic stereophotography A75-21022 A stable, sensitive, low-compliance capacitance force transducer for myocardium measurements A75-21575 Development of an implantable piezoelectric driving system for a circulatory assist device [PB-236116/1] H75-17110 BIOLOGICAL EFFECTS Correlation between thermal death and membrane fluidity in Bacillus stearothermophilus A75-21013 Effects of increased partial pressures of oxygen on the embryonic and post-embryonic development of drosophila melanogaster A75-22109 BIOLOGICAL BVOLUTIOI Correlation between thermal death and membrane fluidity in Bacillus stearothermophilus A75-210113 Inhabited space, part 1 cosmic life sciences [HASA-TT-F-819] N75-17111 BIOHEDICAL DATA Skylab Medical Data Center and Archives[NASA-TM-X-58118] N75-17080 Medical benefits from the NASA biomedical applications program B75-17211 BIOMETRICS Evaluation of localized muscle fatigue using power spectral density analysis of the electromyogram A75-19693 Automatic methods of seismoactogram analysis when studying spontaneous and evoked motor activity A75-21523 Precise recording of human eye movements A75-22216 Determination of body fluid compartments by electrical impedance measurements A75-22107 BIOBICS Two-tone distortion products in a nonlinear model of the basilar membrane A75-20123 Model of crossed olivocochlear bundle effects A75-20129 Difference thresholds for interaural delay A75-20795 A mechanis* for the electrocardiogram response to left ventricular hypertrophy and acute ischemia A75-21171 Acceleration time series resulting from repetitive extension-flexion of the hand A75-21570 BIOSATELLITES Biosatellite: Results of an experiment [BLL-H- 23166- (5828. IF) ] 875- 17056 BIOIELEBET8Y Telenetric control of heart adaptation during automatic and free-fall parachute 3UDps A75-22101 BIRDS A universal bird head-holder for stereotaxic surgery A75-20521 BLOOD Morphological and cytochemical indices of the stress reaction in the blood system under the influence of G-forces H75-17068 BLOOD CIRCOLAIIOH Effects of a multi-hour immersion with intermittent exercise on urinary excretion and tilt table tolerance in athletes and nonathletes A75-20887 Hypoxic ventilatory depression in dogs A75-21572 Blood P/50/ calculated from a single measurement of pH, P/02/, and S/02/ A75-21571 BLOOD COAGOLATIOB Hemostatic alterations following severe dysbaric stress [AD-787065] S75-16218 BLOOD FLOB Forearm blood flow during body temperature transients produced by leg exercise A75-21567 Biomedical engineering support development of nuclear driven blood pump [COO-2155-12] 1175-16233 Data processing programs for nonlinear analysis of aortic flow in living dogs [NASA-CR-112085] H75-17078 Development of ultrasonic methods for hemodynamic measurements [NASA-CR-111235] N75-17081 BLOOD PLASMA Plasma thyroxine changes of the Apollo crewmen A75-20892 Distribution characteristics of methylhydrazine in the plasma and cerebrospinal fluid of monkeys A75-20895 Slucagon and plasma catecholaaine responses to graded and prolonged exercise in man A75-21568 Circadian variation of intercompartmeotal potassium fluxes in man A75-21573 Changes in haptoglobin and other plasma proteins of rats during exposure to pure oxygen at 760 torr A75-22403 BLOOD VESSELS Morphology of the internal organs in the adaptation of animals to high-altitude conditions N75-17072 BLOOD VOLUME Ventricular performance and energy of compression, power, and rate of change of power during isovolumic contraction 175-20960 Depth of immersion as a determinant of the natriuresis of water immersion A75-22155 BODY FLDIDS Organ fluid changes and electrolyte excretion of rats exposed to high altitude A75-20885 Determination of body fluid compartments by electrical impedance measurements A75-22107 BOOT KIHEHATICS Continued investigation of kinetic aspects of bone mineral metabolism determining body calcium by measuring argon after neutron irradiation [HASA-CH-111607] H75-17083 SOBJECT I8DEI CBBBBBAL COBIBX BOOT TEHPBHiTOBE Physiological reactions to wet-cold A75-20889 Temperatace responses to infusion of electrolytes daring exercise A75-20900 Forearm blood flow during body temperature transients produced by leg exercise A75-21567 BOBE HABBOR Study of bone mineral metabolism during body immobilization, bed rest, and space flight [HASA-CH-141608] H75-17082 Continued investigation of kinetic aspects of bone mineral metabolism determining body calcium by measuring argon after neutron irradiation [BASA-CH-141607] H75-17083 BBAIN CIBCULATIOH Investigation of electrical impedance variations of dog brain tissue during experimental metabolic disturbances A75-22408 EEG criteria for flying fitness applied by the German Air Force Institute of Aviation Hedicine A75-22415 Influence of G-forces on the blood vessels in the nervous system of the rabbit H75-17059 BRAIH DAHAGE Functional organization of primate oculomotor system revealed by cerebellectomy A75-20250 Pine structural changes in the lateral vestibular nucleus of aging rats A75-210<12 BBill SIBB The significance of the commissural system of the brain in lateralization of sleep and vakefulness A75-20006 Differing responses to hypercapnia and hypoxia following pneumotaxic center ablation A75-22296 BBBATHIHG Vagal modulation of respiratory control during exercise A75-22299 BBEATBIHG APPABAIDS The technology application process as applied to a firefighter's breathing system H75-17222 CALCIOB Total body calcium analysis neutron irradiation [HASA-CR-141573] H75-16212 Continued investigation of kinetic aspects of bone mineral metabolism determining body calcium by measuring argon after neutron irradiation [NASA-CB-141607] H75-17083 CALOBIC STIHDLI Physiological reactions of thermoregulation to convective and radiant heat stimuli A75-21114 CAHCEB Immediate and delayed effects of nitrogen mustard on cell replication in an autogenous rat sarcoma A75-20525 CABBOHYDBATE HETABOLISH Changes in serum proteins, viscosity, and protein-bound carbohydrates during prolonged bedrest A75-22402 Glucose tolerance of lovlanders during prolonged • stay at high altitude and among high altitude natives A75-22405 Investigation of carbohydrate and protein metabolism in the digestive organs of the rabbit under the combined influence of vibration, acceleration and irradiation 875-17067 CABBOH DIOXIDE COHCEITBATIOH An electrochemical device for carbon dioxide concentration - System design, performance and steady state analysis [SAE PAPER 740932] A75-22745 CAHBOB DIOXIDE BEB07AL Environnental carbon dioxide control [SAE PAPEB 740931] A75-22744 CABBOH DIOXIDE TBHSIOB Respiration during heat stress A75-20891 CABDIAC VEHIBICLES The use of echocardiography to measure isometric contraction time A75-20827 Ventricular performance and energy of compression, power, and rate of change of power during isovolumic contraction A75-20960 A mechanism for the electrocardiogram response to left ventricular hypertrophy and acute ischemia A75-21174 C&BDIOVASCOLAB SISTEB Cardiodynamics of athletes performing muscular work A75-20007 A model of psychosocial hypertension showing reversibility and progression of cardiovascular complications A75-21175 Influence of G-forces on^the neuroreceptor apparatus of the cardiovascular system B75-17062 Survey of current cardiovascular and respiratory examination methods in medical selection and control of aircrew [AGABD-AG-196] B75-17079 CABOTID SIHDS BOOT Byperoxic hyperventilation in carotid-deafferented cats A75-22297 Hypoxia-induced tachypnea in carotid-deafferented cats A75-22298 CA1ECBOLANINE Glucagon and plasma catecholamine responses to graded and prolonged exercise in man A75-21568 Catecholamine and phagocytic responses in infected mice exposed to hyperbaric helium-oxygen atmospheres A75.-22414 CELL DIVISION Lymphoid cell kinetics under continuous low dose-rate gamma irradiation: A comparison study [NASA-CH-142068] M75-16213 CELLS (BIOLOGY) Immediate and delayed effects of nitrogen mustard on cell replication in an autogenous rat sarcoma A75-20525 Dltrastructural studies on plasma membrane related secondary vacuoles in cultured cells A75-22454 Influence of maximum tolerable transversely-directed G-forces on the ultrastructure of intercellular and intracellular channels in the adenohypophysis N75-17070 CEBTBAL BEBVODS STSCEB Fine structural changes in the lateral vestibular nucleus of aging rats A75-21042 Chemical index to fitness (biochemical correlates of stress in specialized populations) [AD-787824] N75-16222 CESTBAL HBBVOOS SYSTEH DEPBBSSAHTS Hypoxic ventilatory depression in dogs A75-21572 CEBEBBLLOH Functional organization of primate oculomotor system revealed by cerebellectomy A75-20250 CEBEBBAL COBIEX Buman cortical magnification factor and its relation to visual acuity A75-20249 Beactions of neurons in the second auditory cortical area to sound stimulation A75-20918 The effect of head tilt on meridional differences in acuity - Implications for orientation constancy visual perception A75-21098 1-5 CBBBB80SPIHAL FLDID SDBJECT IHDEI Basal forebrain and hypothalamic connections to frontal and parietal cortex in the rhesus monkey A75-22010 Graded, unitary and eye movement potentials in lateral genicalate nucleus following reticular stimulation A75-22215 CEBEBBOSPIBiL FLDID Distribution characteristics of methylhydrazine in the plasma and cerebrospinal fluid of monkeys A75-20895 CHEHICiL EFFECTS Vagal modulation of respiratory control during exercise 475-22299 CHEHOBECEPTOBS Hypoxic ventilatory depression in dogs A75-21572 CHEHOTHEBAPY Immediate and delayed effects of nitrogen mustard on cell replication in an autogenous rat sarcoma A75-20525 Climatologic aspects of obesity and therapeutic semistarvation A75-22412 Drug interactions - Ho* to identify them clinical drug toxicity prevention guideline A75-22416 CIBCADIAH EBIIHHS Onclocklike behaviour of biological clocks A75-21166 Circadian variation of intercompartmental potassium fluxes in man A75-21573 Circadian variations in renal excretion of magnesium, calcium, and phosphorus during a 3-day flight onboard C-5 aircraft CAD-787661] N75-16216 CIBCOLATOBT SYSTEH Development of an implantable piezoelectric driving system for a circulatory assist device [PB-236446/1 ] ' H75-17110 CIVIL AVIATION Index to FAA Office of Aviation Medicine reports: 1961 through 1973 [AD-779353] N75-17087 CLIHICAL HEDICINE Drug interactions - How to identify them clinical drug toxicity prevention guideline A75-22416 CLOSED ECOLOGICAL STSTEHS Spacecraft applications of electrochemical processes in regenerative life support and power supply systems [SAE PAPEB 740929] 475-22713 COCHLEA Vibrations of the basilar membrane of the cochlea A75-20087 Hypothesis on the function of the crossed olivocochlear bundle A75-20128 Model of crossed olivocochlear bundle effects A75-20129 COCKPITS Paths of movement of body members in aircraft cockpits 475-19691 COLD TOLEBAHCE Physiological reactions to wet-cold 475-20889 Tolerance of one species of jerboa /Jaculus orientalis/ to prolonged exposure to deep hypothermia A75-20950 COLD iEAIHEB TESTS Effect of environmental extremes on task performance time A75-19708 COLO8IES Freguency of differentiated sectored colonies among bacteria in suspension in the outside air observed over three years (its correlation with various parameters: Holf's numbers, solar flux, geomagnetic activity, fluctuating phenomena [NASA-TT-F-16202] 875-17076 COLOH VISIOH Color and texture differences in embedded target visual search situations A75-19681 Effects of lens color on target visibility for air-sea rescue A75-19721 Temporal independence of the Bezold-Bruecke hue shift in color vision A75-22204 Light adaptation and the saturation of colours A75-22209 The 'fluttering heart1 and spatio-temporal characteristics of color processing. I - Beversibility and the influence of luminance. II - Lateral interactions across the chromatic border visual responses A75-22214 Bhat causes decay of pattern-contingent chromatic aftereffects A75-22217 COHFOBT Individual differences in response to the environment A75-20825 The effect of rating scale parameters on the assessment of vibration intensity by passengers in transport environments A75-22201 COHMDHICATIOH EQOIPHEHT Human factors role in eguipment definition and facility layout for the Space Computational Center and the NOBAD Computer System Improvement Program A75-19722 COMPBHSATOBY TRACKIHG The measurement of attention capacity through concurrent task performance with individual difficulty levels and shifting priorities A75-19710 COHPOTEB SBAPBICS A truly three-dimensional vectorcardiographic display A75-21867 COHPOTEB PBOGBAHUHG A hierarchical concept for man-machine communicatiqn A75-19714 Advance cretf procedures development techniques: Procedures generation program requirements document [NASA-CH-141561] H75-16230 COHPOTEB PBOGRAHS Data processing programs for nonlinear analysis of aortic flow in living dogs [ NASA-CR-142085] N75-17078 COHPOTBB SYSTEHS DESIGH Human factors role in eguipment definition and facility layout for the Space Computational Center and the NOBAD Computer System Improvement Program A75-19722 COHPOTEB TECBHIQOES A computer aided function allocation and evaluation system /CAFES/ A75-19698 Computer-aided generation of performance measures for man-machine systems A75-19699 Quantification of abnormal BEG spike characteristics A75-21868 Man-machine interactive imaging and data processing using high-speed digital mass storage [NASA-CE-142088] H75-17100 COHPOTEBIZED SIHOLATIOH Effect of sampling procedure upon the performance of an electrical model of auditory detection A75-20122 ' CONDITIOHIHG Intersensory generalization and conditioning in adaptation to visual tilt A75-19950 COHDITIOHIBG (LE4BSIHG) Characteristics of conditioned reactions in different phases of natural human sleep 475-21522 COHFEBEHCES Human Factors Society, Annual Heeting, 18th, Huntsville, Ala., October 15-17, 1974, Proceedings 475-19676 Space mission in Tashkent joint conference on space biology and medicine [NASA-TT-F-16161 ] 875-17085 1-6 SUBJECT IB DEI DESISH ABALYSIS A scientific conference on the problen, Hypozia during pathological processes caused by extreme factor, devoted to the 80th birthday of Academician of the academy of Medical Sciences of the OSSB [BASA-TT-P-16159] H75-17086 Population exposures. Proceedings of the 8th Midyear Topical Symposium of the Health Physics Society [COBF-71I1018] H75-17088 COBGBBIT4L ABOHALIES Differential diagnosis of anomalies of the great arteries by real-time tvo-dimensional echocardiography A75-2191IU Effects of increased partial pressures of oxygen on the embryonic and post-enbryonic development of drosophila melanogaster A75-22U09 COHTAHIHABTS Desorptive transfer: A mechanism of contaminant transfer in spacecraft [AD-787857] H75-16207 Contribution to the question of the contamination of suspended substances filters by germs [ BASA-TT-F-161U9] B75-1707U COHTBACTIOH The use of echocariiography to measure isometric contraction time A75-20827 COBTBOL BQOIPHBBT An evaluation of the ATM man/machine interface. Phase 3: Analysis of SL-3 and SL-4 data [NASA-CB-120586] H75-16226 COBTBOLLED 1TBOSPHBBES Oltrastructural alterations observed in mouse lung after prolonged Be/02 exposure A75-20886 On the theoretical basis of the optimal oxygen content in the atmosphere for the human being A75-21113 COBTECTIVB HEAT TB4BSFEE Physiological reactions of thermoregulation to convective and radiant heat stimuli A75-2111Q COHfETOBS Human engineering studies of high speed pedestrian conveyors using motion simulator [AHC-CP-1278] H75-17096 COOLISG SYSTEMS Ice pack heat sink subsystem, phase 2 astronaut life support cooling system[NASA-CB-137611] B75-17109 COBOHABY ABTEBI DISEASE Differential diagnosis of anomalies of the great arteries by real-time two-dimensional echocardiography A75-2191U COBOBABT CIBCOLATIOI Normal coronary angiography in an aircrevman with serial exercise test changes A75-20896 COBTICOSTBBOIDS Adrenocortical activity and urinary cyclic ASP levels - Effects of hypobaric hypoxia A75-20893 COST AHALISIS Cost analysis of life sciences experiments and subsystems to be carried in the Spacelab [HASA-CB-12060H] H75-17101 COST BPFECTIVEHBSS ' BOH much should you pay for that box aircraft simulator cost effectiveness A75-19677 COST BSIIBATBS Development of an BVA systems cost model. volume 3: EVA systems cost model [NASA-CR-1Q1636] H75-17105 CBASB IHJOBIBS Mathematical modelling, simulation and experimental testing of biomechanical system crash response [AIAA PAPEB 75-272] A75-22495 CBEIS Advance crev procedures development techniques: Procedures generation program requirements document [HASA-CB-111561 ] H75-16230 CIABIDBS Effects of hypoxia, cyanide, and ischaemia on myocardiil contraction - Observations in isolated muscle and intact heart A75-20961 CYTOLOGY Horphological and cytochemical indices of the stress reaction in the blood system under the influence of G-forces H75-17068 DATA BASES Skylab Medical Data Center and Archives [BASA-TM-I-581118] H75-17080 DATA HABAGEHEBT Human factors engineering aspects of satellite communication systems A75-19720 DATA PBOCESSIBG Computer-aided generation of performance measures for man-machine systems A75-19699 Design Option Decision Tree - A method for schematic analysis of a design problem and integration of human factors data A75-19700 DATA SABPLIHG Effect of sampling procedure upon the performance of an electrical model of auditory detection A75-20122 DATA TBANSHISSIOI The processing and transmission of BEG data H75-17213 DECAY BAIES Nhat causes decay of pattern-contingent chromatic aftereffects A75-22217 DECISIOB MAKIBG Design Option Decision Tree - A method for schematic analysis of a design problem and integration of human factors data A7S-19700 Changes in detection measures and skin resistance during an auditory vigilance task A75-22200 DECOHPBBSSIOB SICSBESS Optimal use of nitrogen to suppress the high pressure nervous syndrome A7S-20890 Somatic-evoked brain responses as indicators of adaptation to nitrogen narcosis A75-22406 Hemostatic alterations following severe dysbaric stress [AD-787065] N75-16218 DEPEHSE COaaOIICATIOBS SATELLITE SYSTEM Buman factors engineering aspects of satellite communication systems A75-19720 DEBOMIDIFIC&TIOB Desiccant humidity control system for space shuttle cabins [BASA-CB-115568] S75-17097 DEMIBBBAtlZIBG Study of bone mineral metabolism during body immobilization, bed rest, and space flight [HASA-CB-1U1608] H75-17082 DEBTISTBY Bypobaric chamber for the study of oral health problems in a simulated spacecraft environment B75-17215 DBPOSIIIOB A theory of aerosol deposition in the human respiratory tract A75-21569 DBSICCABTS Desiccant humidity control system for space shuttle cabins [HASA-CB-115568] B75-17097 DBSI6B AHALISIS Design Option Decision Tree - A method for schematic analysis of a design problem and integration of human factors data A75-19700 Design and function of a mechanical assembly for recording echocardiograms during upright exercise A75-20962 1-7 DBSOBPTIOH SUBJECT IHDEI A stable, sensitive, low-compliance capacitance force transducer for myocardium measurements A75-21575 DESOBPTIOH Desorptive transfer: A mechanism of contaminant transfer in spacecraft [AD-787857] N75-16207 DIAGNOSIS Differential diagnosis of anomalies of the great arteries by real-time two-dimensional echocardiography A75-2194U DICHBOISH Plane-polarized light in microspectrophotometry A75-22207 DIGITAL COHPOTEBS Advance crew procedures development techniques: Procedures generation program requirements document [NASA-CB-111561] N75-16230 DIGITAL TECHHIQOES Man machine interactive imaging and data processing using high speed digital mass storage A75-19713 Determination of the transfer function of the external ear by an impulse response measurement A75-20130 DISPLACEMENT Simultaneous visuonotor adaptation to optical tilt and displacement A75-21100 Motion perception. Beport 1: Perception of minute movements [NASA-TT-F-16186] N75-17093 DISPLAY DEVICES The transition of experienced pilots to a frequency-separated aircraft attitude display - A flight experiment A75-19680 Color and texture differences in embedded target visual search situations A75-19681 Human factors role ID equipment definition and facility layout for the Space Computational Center and the N3BAD Computer System Improvement Program A75-19722 A truly three-dimensional vectorcardiographic display A75-21867 The influence of simultaneous and sequential display modes on human information-transfer behavior [AD-787288] N75-16223 DIVIHG (OHDEBBATER) Somatic-evoked brain responses as indicators of adaptation to nitrogen narcosis A75-22U06 Biochemical responses of men to simulated air dives of 100 feet [AD-787066] N75-16217 DBDGS Drug interactions - How to identify them clinical drug toxicity prevention guideline A75-22416 DTHAMIC LOADS Electromyography in dynamic muscular loading A75-1970« DIHAHIC MODELS Development of a training model for naval flight students A75-19679 EAB *• Two-tone distortion products in a nonlinear model of the basilar membrane A75-20123 Determination of the transfer function of the external ear by an impulse response measurement A75-20130 Relation of the loudness function to the intensity characteristic of the ear A75-20796 EAE PBOTECTOBS Pure-tone, third-octave, and octave-band attenuation of ear protectors A75-20127 EARDRUMS Transformation of sound pressure level from the free field to the eardrum in the horizontal plane A75-20126 EARTH ATMOSPHERE Frequency of differentiated sectored colonies among bacteria in suspension in the outside air observed over three years (its correlation with various parameters: Wolf's numbers, solar flux, geomagnetic activity, fluctuating phenomena [NASA-TT-F-16202] N75-17076 ECHOCAHDIOGBAPHY The use of echocardiography to measure isometric contraction time A75-20827 Design and function of a mechanical assembly for recording achocardiograms during upright exercise A75-20962 Differential diagnosis of anomalies of the great arteries by real-time two-dimensional echocardiography A75-21941 EFFECTIVE PEBCEIVED NOISE LEVELS The effect of disturbing acoustic sources on some psychological functions [RTS-8831] N75-17091 EFFEREHT NEBVODS SYSTEMS Physiological reactions to wet-cold A75-20889 ELECTBIC STIMDLI Graded, unitary and eye movement potentials in lateral geniculate nucleus following reticular stimulation A75-22215 ELECTRICAL IMPEDANCE Determination of body fluid compartments by electrical impedance measurements A75-22107 ELECTBO-OPTICS The effect of scene rotation on target acquisition image stabilization of electro-optical displays A75-19682 ELECTBOCABDIOSRAPflv A mechanism for the electrocardiogram response to left ventricular hypertrophy and acute ischemia A75-2117U A truly three-dimensional vectorcardiographic display A75-21867 Characteristics of the electrocardiogram under physical and emotional stress in man A75-22U014 ELECTROCHEMISTRY Spacecraft applications of electrochemical processes in regenerative life support and power supply systems [SAE PAPER 7140929] A75-227U3 ELECIBOEBCEPHALOGBAPHY The significance of the commissural system of the brain in lateralization of sleep and wakefuloess A75-20006 Characteristics of conditioned reactions in different phases of natural human sleep A75-21S22 Quantification of abnormal EEG spike characteristics A75-21868 EEG criteria for flying fitness applied by the German Air Force Institute of Aviation Medicine A,75-22

MAY 1975 Typical Personal Author Index Listing PERSONALAUTHOR BAIL, G. S. ' ^ The dependence of reaction times on the location of the stimulus [NASA-TT-F-16001] H75-10689 The title of the document is used to provide the user with a brief description of the subject matter The NASA or AIAA accession number is included in each entry to assist the user in locating the abstract in the abstract section of this supplement If applicable a report number is also included as an aid rn identify ing the document ABBAS, P. J. Bate versus level functions for auditory-nerve fibers in cats Tone-burst stimuli A75-20125 ABBOTT, J. A. A mechanism for the electrocardiogram response to left ventricular hypertrophy and acute ischemia A75-2117U ABBBHAB, A. Blood P/50/ calculated from a single measurement of pH, P/O2/, and S/02/ 475-21571 ABULADZB, G. V. Automatic methods of seismoactogram analysis vhen studying spontaneous and evoked motor activity A75-21523 ALBDS, J. S. A hierarchical concept for man-machine communication A75-1971U ALLBB, B. I. Advance prototype silver ion water bactericide system [»ASA-CR-1 Ice pack heat sink subsystem, phase 2 [NASA-CH-137611] H75-17109 1-32 PBBSOIAL AUTHOB I8DBI LBTZIBG, I. 6., D.J. KESBBDT, K. B. Paths of movement of body members in aircraft cockpits A75-1969U KBBTBSZ, A. B. The role of positional and onentational disparity caes in human fasional response 475-22213 KBSTBB, F. L. Desiccant humidity control system[BASA-CB-115568] B75-17097 KHALIL, I. B. Electromyography in dynanic oascalac loading A75-1970U KIEVIT, J. Basal forebrain and hvpothalamic connections to frontal and parietal cortex in the rhesus monkey A75-22010 KIHS, A. I. Mathematical modelling, simulation and experimental testing of biomechanicai system crash response[AIAA PAPEB 75-272] A75-22495 KIBEPAIBICK, B., III Human Factors Society, Annual Meeting, 16th, Hnntsville, Ala., October 15-17, 197H, Proceedings A75-19676 Optical range and range rate estimation for teleoperator systems A75-19711 KLBBAH07, V. K. Influence of G-forces on the neuroreceptor apparatus of the cardiovascular system B75-17062 KHOOP, p. A. Computer-aided generation of performance measures for man-machine systems A75-19699 KHYAZEVA, G. 0. Dynamics of morphological manifestations of reactions of the organism under conditions of hypergravitation N75-17065 KOHSTAHTIHOY, B. P. Inhabited space, part 1 [NASA-TT-7-819] N75-17111 KOPAIEV, I. 1. Morphological manifestations of the stress reaction under the influence of transversely directed G-forces N75-17066 KOPELL, B. S. The contingent negative variation during a memory retrieval task A75-20295 KOBKAB, K. 0. Design Option Decision Tree - A method for schematic analysis of a design problem and integration of human factors data A75-19700 KOBOSTOVTSE7A, H. T. A scientific conference on the problem, Hypoxia during pathological processes caused by extreme factor, devoted to the 80th birthday of Academician of the Academy of Medical Sciences of the USSR [HASA-TT-F-16159] B75-17086 KOZLOHSKI, S. Temperature responses to infusion of electrolytes during exercise A75-20900 KBAIKI, V. Ophthalmologic stereophotography A75-21022 KBESS, G. Area-luminance effects and the visual evoked brain response A75-21099 KBOTZ. B. V., JB. G-tolerance and protection with anti-G suit concepts A75-22399 KTOHAS, P. I. Quantification of abnormal EEC spike characteristics A75-21868 KOGLEB, J. EEG criteria for flying fitness applied by the German Air Force Institute of Aviation Medicine A75-221415 KOBS, J. I. Human factors engineering aspects of satellite communication systems A75-19720 KOLA6IH, T. K. A scientific conference on the problem, Hypoxia luring pathological processes caused by extreme factor, devoted to the 80th birthday of Academician of the Academy of Medical Sciences of the DSSB [BASA-TT-F-16159] B75-17086 KOMBIA. B. B. L. Glucose tolerance of Icelanders during prolonged stay at high altitude and among high altitude natives A75-22105 KUIPBBS, H. G. J. B. Basal forebrain and hypothalamic connections to frontal and parietal cortex in the rhesus monkey A75-22010 LAPEVEBS, E. T. Evaluation of localized muscle fatigue using power spectral density analysis of the electrooyogram A75-19693 LAHIBI. S. Vagal modulation of respiratory control during exercise A75-22299 LASGLEI, I. D. Somatic-evoked brain responses as indicators of adaptation to nitrogen narcosis A75-22«06 LAPTEV A, I. A. Inhibition of germination of Actinomycetes spores in a stationary magnetic field [BASA-TT-F-16203] B75-17075 LABSEH, L. E. Image processing of angiograms: A pilot study N75-17216 LiSLEI, 0. J. Spatial summation of foveal increments and decrements A75-22208 LAiBENCE, I. H. Toxicity of the pyrolysis products of spacecraft materials [ HASA-CH-1. B. Tissue oxygenation and splenic erythropoiesis during chronic hypoxia and hypercapnia A75-22471 PBBKIHS, ». J. A truly three-dimensional vectorcardiographic display A75-21867 PETIT, J. B. Telemetnc control of heart adaptation during automatic and free-fall parachute 3umps A75-22101 PIRZiDl, F. A. Effects of hypoxia, cyanide, and ischaemia on myocardial contraction - Observations in isolated muscle and intact heart A75-20961 PODTBOV, 7. K. Dynamics of morphological manifestations of reactions of the organism under conditions of hypergravitation N75-17065 POLIS, B. D. Physiological responses [AD-777838] 1175-17095 POSI, J. Immediate and delayed effects of nitrogen mustard on cell replication in an autogenous rat sarcoma A75-20525 POTEHKIH, B. A. Problems associated vith studies of vibrations in man-machine systems A75-22715 POZBABITSKAYi. L. B. Inhibition of germination of Actinomycetes spores in a stationary magnetic field [NASA-TT-P-16203] N75-17075 PBEOBBAZHEHSKAYA, I. H. Influence of G-forces on the blood vessels in the nervous system of the rabbit N75-17059 PBICE, D. L. The effects of certain gimbal orders and workloads on target acguisition A75-19683 PBIVES-BABDIRA, B. A. Influence of G-forces on venous and nervous systems H75-17064 PBI7BS, H. G. Effect of extremal factors on the structure of the organs and tissues [NASA-TT-F-791] H75-17057 Adaptation of the vascular system to extremal factors N75-17058 QOABBI, V. H. Immediate cardiac response to exercise - Physiologic investigation by systolic time intervals at graded fork loads A75-20826 BAKHIBO7, T. A. Morphology of the internal organs in the adaptation of animals to high-altitude conditions 1175-17072 BABBAOT, P. C. Effect of potassium depletion in normal males - An Apollo 15 simulation A75-20884 BEBOCK, A. S. Ventilatory effects of hypoxia and their dependence on C02 pressure A75-21565 BECKZEB, G. Contribution to the question of the contamination of suspended substances filters by germs [HASA-TT-F-16149] H75-17074 BEDDING, G. B. Simultaneous visuomotor adaptation to optical tilt and displacement A75-21100 BEDDIBG, B. A. Early changes in lungs of rats exposed to 70X 02 A75-21571 BBOIOOD, D. B. Design and function of a mechanical assembly for recording echocardiograms during upright exercise A75-20962 Differential diagnosis of anomalies of the grea~t arteries by real-time two-dimensional echocardiography A75-21944 BEHTSCHLEB. I. Processing of positional information in the human visual system A75-2180U BICB4BDS, R. A. Stereopsis with large disparities - Discrimination and depth magnitude A75-22211 BIHiLDDCCI, B, J. The spatial Broca-Sulzer and sensitization effects for foveal viewing A75-22212 BITCHIE, B. B. Population exposures. Proceedings of the 8th Bidyear Topical Symposium of the Health Physics Society [CONF-7U1018] H75-17088 BIZBINASHVILI, B. S. The significance of the commissural system of the brain in lateralization of sleep and wakefulness A75-20006 BOBEBtS, B. F. Forearm blood flow during body temperature transients produced by leg exercise A75-21567 BOBI, J. Optimal use of nitrogen to suppress the high pressure nervous syndrome A75-20890 BOBBELBH, G. J., JB. Ice pack heat sink subsystem, phase 2 [BASA-CB-137611] H75-17109 BDEHB, J. 0., JB. Image processing of angiograms: A pilot study N75-17216 BOLLS, E. I. Buman cortical magnification factor and its relation to visual acuity A75-20249 BOSCOE, S. H. The transition of experienced pilots to a frequency-separated aircraft attitude display - A flight experiment A75-19680 BOSEHBEBG, B. B. A mechanism for the electrocardiogram response to left ventricular hypertrophy and acute ischemia A75-21174 BOSS, A. V. Organ fluid changes and electrolyte excretion of rats exposed to high altitude A75-20885 BOSS, B. C. Catecholamine and phagocytic responses in,infected mice exposed to hyperbaric heliun-oxygen atmospheres A75-22414 BOTH, 8. I. The contingent negative variation during a memory retrieval task A75-20295 BODLLET, C. Determination of body fluid compartments by electrical impedance measurements A75-22107 Investigation of electrical impedance variations of dog brain tissue during experimental metabolic disturbances A75-22408 BOBIB, B. T. , Chemical index to fitness (biochemical correlates of stress in specialized populations) [AD-787824] M75-16222 1-36 PEBSOHAL iOTBOB IBDBI SHIBSO?, B. i. BOHHBL, J. A. Effect of potassium depletion in normal nales - An Apollo 15 siDQlatioa A75-20881 SABBAH, B. S. Ventricular performance and energy of compression, power, and rate Df change of power during isovolumic contraction A75-20960 SACHS, H. B. Bate versus level functions for auditory-nerve fibers in cats Tone-burst stimuli A75-20125 SABHGBB, B. L. Hunan Factors Society, Annual Meeting, 18th, Huntsville, Ala., October 15-17, 1971, Proceedings A75-19676 SAIHT JOHH, B. H. following pneumotaxic center ablation A75-22296 SALAZKIB, V. H. On the theoretical basis of the optimal oxygen content in the atmosphere for the human being A75-21113 SALDIVAB, J. I. Effect of a general aviation trainer on the stress of flight training A75-20882 SALDIVAB, J. T., JB. Physiological responses [AD-777838] N75-17095 SAHDQDIST, G. B. Biomedical engineering support [C30-2155-12] B75-16233 SAITISTBBAH, G. A. A model of psychosocial hypertension shoving reversibility and progression of cardiovascular complications A75-21175 SA7IH4, T. A. Dynamics of morphological manifestations of reactions of the organism under conditions of hypergravitation B75-17065 SiVIHOVA, L. I. Influence of G-forces on the vessels in the retina, kidney and uterus of the rabbit B75-17060 SAITOH, C. Respiration during heat stress A75-20891 SCABLAB, L. A. Target detection assessment using an orthogonal mixed-factor central~composite design 475-19703 SCABO, A. Survey of current cardiovascular and respiratory examination methods in medical selection and control of aircrew [AGAHD-AG-196] B75-17079 SCHATTE, C. L. Belative susceptibility of altitude-acclimatized mice to acute oxygen toxicity A75-22U69 SCHBAB, H. E. Pseudo-internuclear oculomotor ophthalmoplegia secondary to Guillam-Barre polyneuronitis simulating myasthenia gravis in an air transport pilot A75-22U17 SCHHEIDEB, H. Depth of immersion as a determinant of the natriuresis of water immersion A75-22<»55 SCHDL2E, A. E. The processing and transmission of EEC data H75-17213 SCHHEHT. V. L. Evoked potential correlates of selective attention with multi-channel auditory inputs A75-20291I SEAILE, B. G. Effects of lens color on target visibility for air-sea rescue A75-19721 SELIVAHOYA, L. H. Influence Df G-forces on the vessels in the retina, kidney and uterus of the rabbit B75-17060 SEBVAIS, J. C. Telemetric control of heart adaptation during automatic and free-fall parachute jumps A75-22101 SHABBOB, B. H. Development of a training model for naval flight students A75-19679 SHAB, E. A. G. Transformation of sound pressure level from the free field to the eardrum in the horizontal plane A75-20126 SHEFFIELD, P. J. Effects of long-term exposures to 100% oxygen at selected simulated altitudes on the pulmonary surfactant in mice A75-20883 Plasma thyroxine changes of the Apollo crewmen A75-20892 SHELEST, I. I. Beactions of neurons in the second auditory cortical area to sound stimulation A75-20918 SHIELDS, B. L., JB. Optical range and range rate estimation for teleoperator systems A75-19711 SHOBIB, H. Blood P/50/ calculated from a single measurement of pH, P/02/, and S/02/ 475-21571 SIEBBASSE, K. F. Determination of the transfer function of the external ear by an impulse response measurement A75-20130 SIEGEL, S. 8. The Performance and capabilities of terrestrial organisms in extreme and unusual gaseous and liquid environments [BASA-CB-112192] B75-17077 SIGMOB, J. L. Medical benefits from the BASA biomedical applications program B75-17211 SIKOBA, B. The contingent negative variation during a memory retrieval task A75-20295 SILVEB, R. H. Miniature muscle displacement transducer [ HASA-CASE-NPO-13519-1] B75-17102 SIMOH, S. Optimal use of nitrogen to suppress the high pressure nervous syndrome A75-20890 SIMOB07, P. V. Characteristics of the electrocardiogram under physical and emotional stress in man A75-22101 SKIPKA, «. Effects of a multi-hour immersion with intermittent exercise on urinary excretion and tilt table tolerance in athletes and nonathletes A75-20887 SKLABB8, B. J. Immediate and delayed effects of nitrogen mustard on cell replication in an autogenous rat sarcoma 475-20525 SLAVOTSKAIA, H. V. Characteristics of conditioned reactions in different phases of natural human sleep A75-21522 SHATBEBS, J. B. Badiation effects control: Eyes, skin [ BASA-CB-111612] B75-17081 SBILET, P. Development of an implantable piezoelectric driving system for a circulatory assist device [ PB-236116/1] B75-17110 SHIBHOT, B. A. Certain peculiarities of modeling group activities of operators [JPBS-63789] N75-17103 1-37 SHIIH, B. B. PEESOSAL AOIHOB IHDBX SBITH. B. B. Design and function of a mechanical assembly for recording echocardiograms daring upright exercise A75-20962 SHIIH, J. B. Quantification of abnormal EEG spike characteristics A75-21868 SBITH, L. H. Bionedical engineering support [COO-2155-12] H75-16233 SHITH, B. C. Space Shuttle food galley design concept [SAB PAPER 740922] A75-22740 SBITH. S. L. Effects of increased partial pressures of oxygen on the embryonic and post-embryonic development of drosophila melanogaster A75-22109 SOLOHON, J. 0. Oltrastructural alterations observed in mouse lung after prolonged He/02 exposure A75-20886 SOOZi, K. A. Correlation between thermal death and membrane fluidity in Bacillus stearothermophilus A75-21043 SPEABS, C. P. Effect of potassium depletion in normal males - An Apollo 15 simulation A75-20884 SPBHCBB, B. A. A manipulator system designed for Free-Plying Teleoperator Spacecraft A7S-19712 SPODICK, D. H. Immediate cardiac response to exercise - Physiologic investigation by systolic time intervals at graded work loads A75-20826 SPBAT, D. C. Graded, unitary and eye movement potentials in lateral geniculate nucleus following reticular stimulation A75-22215 SPBOSS, F. B. Skylab Medical Dati Center and Archives [NASA-TH-X-58148] 1175-17080 SBIDHABAB, K. Glucose tolerance of lotflanders during prolonged stay at high altitude and among high altitude natives A75-22405 SBIVASTAVA, K. K. Glucose tolerance of lovlanders during prolonged stay at high altitude and among high altitude natives A75-22405 SIABODDB, H. F. The heterogeneity of hemoglobin in man and animals A75-21474 STAVBHGA, D. G. Waveguide modes and refractive index in photoreceptors of invertebrates A75-22202 STEGBH&SS, J. Effects of a multi-hour immersion with intermittent exercise on urinary excretion and tilt table tolerance in athletes and nonathletes A75-20887 STBIDEL, B. F.. JB. An engineering analysis of the human spinal column [PB-235383/7] H75-16215 STEIH, P. D. Ventricular performance and energy of compression, power, and rate of change o£ power during isovolunic contraction A75-20960 STEPHEHS, P. B. A model of psychosocial hypertension showing reversibility and progression of cardiovascular complications A75-21175 STILES, B. H. Acceleration time series resulting from repetitive extension-flexion of the hand A75-21570 STOLABZ, S. J. The effect of head tilt on meridional differences in acuity - Implications for orientation constancy A75-21098 STOLBTJK, J. A. J. Forearm blood flow during body temperature transients produced by leg exercise 475-21567 STpHH, I. F. Human ammo acid excretion patterns during and following prolonged multistressor tests A75-22411 STBEETEE, B. S. Tissue oxygenation and splenic erythropoiesis during chronic hypoxia and hypercapnia A75-22U71 STBIZHKOV, V. S. Influence of maxinua tolerable transversely-directed G-£orces on the ultrastrncture of intercellular and intracellular channels in the adenohypophysis N75-17070 SOSABBAH, B. C. Instructional system design for aircrew training A75-19706 Systems approach to training /SAT/ for the B-1 aircrew A75-19707 SDTIi, A. H. Vibrations of the basilar membrane of the cochlea A75-20087 SOTOLOV, L. S. Histological analysis of tissue structures of the internal organs of steppe tortoises following their exposure to spaceflight conditions while circumnavigating the moon aboard the Zond-7 automatic station N75-17063 Histological analysis of the influence of certain extremal factors on the postradiational changes in the tissues of experimental animals H75-17071 SOTOLOV, 1. L. Histological analysis of tissue structures of the internal organs of steppe tortoises following their exposure to spaceflight conditions while circumnavigating the moon aboard the Zond-7 automatic station H75-17063 Histological analysis of the influence of certain extremal factors on the postradiational changes in the tissues of experimental animals H75-17071 SVAHISHVILI, B. A. Cardiodynamics of athletes performing muscular work A75-20007 SVIBIDOV, E. P. Characteristics of the electrocardiogram under physical and emotional stress in man A75-22404 TAHKHELSOH, A. Space mission in Tashkent [NASA-TT-F-16161] H75-17085 TAPPAH, 0. V. Biochemical responses of men to simulated air dives of 100 feet [AD-787066] H75-16217 Hemostatic alterations following severe dysbaric stress [AD-787065] H75-16218 TAOLBBE, D. B. A theory of aerosol deposition in the human respiratory tract A75-21569 TBHHBI, S. B. Hyperoxic hyperventilation in carotid-deafferented cats A75-22297 Hypoxia-mduced tachypnea in carotid-deaf ferented cats A75-22298 TEiELL, J. B. A manipulator system designed for Free-Flying Teleoperator Spacecraft A75-19712 1-38 PBBSOHAL AOTBOB IHDEI BALKIHSBAf, C. IBACKB1T, fi. I. Personality and physiological correlates of performance decrement on a monotonous task requiring sustained attention [AD-777825] H75-1709)) Aerospace Medicine Bibliographies Biological Effects 18. Distribution Statement Unclassif ied - Unlimited 19. Security Qassif. (of this report) Unclassified 20. Security Ctassif. (of this page) Unclassified 21. No. of 8k 22. Prfc** $^.00 HC For sal* by th* National Technical Information Service, Springfield, Virginia 221S1 PUBLIC COLLECTIONS OF NASA DOCUMENTS DOMESTIC NASA distributes its technical documents and bibliographic tools to ten special libraries located in the organizations listed below Each library is prepared to furnish the public such services as reference assistance, interhbrary loans, photocopy service, and assistance in obtaining copies of NASA documents for retention CALIFORNIA MASSACHUSETTS University of California. Berkeley Massachusetts Institute of Technology. Cambridge COLORADO University of Colorado. Boulder DISTRICT OF COLUMBIA Library of Congress ttFORRIA MISSOURI Linda Hall Library. Kansas City NEW YORK Columbia University. New York PENNSYLVANIA Georgia Institute of Technology. Atlanta ILLINOIS The John Crerar Library. Chicago Carnegie Library of Pittsburgh WASHINGTON University of Washington. Seattle NASA publications (those indicated by an "" following the accession number) are also received by the following public and free libraries CALIFORNIA Los Angeles Public Library San Diego Public Library COLORADO Denver Public Library CONNECTICUT Hartford Public Library MARYLAND Enoch Pratt Free Library. Baltimore MASSACHUSETTS Boston Public Library MICHIGAN Detroit Public Library MINNESOTA Minneapolis Public Library MISSOURI Kansas City Public Library St Louis Public Library NEW JERSEY Trenton Public Library NEW YORK Brooklyn Public Library Buffalo and Erie County Public Library Rochester Public Library New York Public Library OHIO Akron Public Library Cincinnati Public Library Cleveland Public Library Dayton Public Library Toledo Public Library OKLAHOMA Oklahoma County Libraries. Oklahoma City TENNESSEE Memphis Public Library TEXAS Dallas Public Library Fort Worth Public Library WASHINGTON Seattle Public Library WISCONSIN Milwaukee Public Library An extensive collection of NASA and NASA-sponsored documents and aerospace publications avail- able to the public for reference purposes is maintained by the American Institute of Aeronautics and Astronautics. Technical Information Service. 750 Third Avenue. New York. New York. 10017 EUROPEAN An extensive collection of NASA and NASA-sponsored publications is maintained by the British Library Lending Division. Boston Spa. Wetherby. Yorkshire. England By virtue of arrangements other than with NASA, the British Library Lending Division also has available many of the non-NASA publications cited in STAR European requesters may purchase~facsimile copy or microfiche of NASA and NASA-sponsored documents, those identified by both the symbols "ft" and "". from ESRO/ELDO Space Documentation Service. European Space Research Organization. 114. av Charles de Gaulle. 92-Neuilly-sur-Seme. France NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON DC 2OS46 POSTAGE AND FEES PAID NATIONAL AERONAUTICS AND OFFICIAL BUSINESS SPACE ADMINISTRATION PENALTY POR PRWATE USE ,3OO SPECIAL FOURTH CLASS MAIL NASA-451 Book H Undelivcrable (Section 158 Post.il M. inn . i l ) Do Not Return r __- .- -r ; > .; NASA CONTINUING BIBLIOGRAPHY SERIES —' Vi -,„ \f-. , J... _ . NUMBER , TITLE FREQUENCY _ ' . _ ' _ . 'NASA SP--7011r ,, AEROSPACE MEDICINE AND BIOLOGY Monthly • . Aviation medicine, space medicine, and , __ -£.»'' / , space biology NASA SP -7037 AERONAUTICAL ENGINEERING Monthly Engineering, design, and operation of aircraft and aircraft components NASA SP -7039 NASA PATENT ABSTRACTS BIBLIOGRAPHY SemiannuaUy NASA patents and applications for patent NASA SP-7041 EARTH RESOURCES Quarterly Remote sensing of earth resources by aircraft and spacecraft NASA SP-7043 ENERGY Quarterly Energy sources, solar energy, energy conversion, transport, and storage NASA SP-7500 MANAGEMENT Annually Program, contract, and personnel management, and management technfques Details on the availability of these publications may be obtained from: SCIENTIFIC AND TECHNICAL INFORMATION OFFICE N A T I O N A L A E R O N A U T I C S A N D S P A C E A D M I N I S T R A T I O N Washington, D.C. 20546

Aerospace Medicine and Biology: A continuing bibliography with indexes (supplement 141)

Abstract

Similar works

Full text

Available Versions

NASA Technical Reports Server