Changes in Hospitalization Associated with Introducing the Resident Assessment Instrument

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/111190/1/j.1532-5415.1997.tb02973.x.pd

Experts see it all: configural effects in action observation

Biological motion perception is influenced by observers’ familiarity with the observed action. Here we used classical dance as a means to investigate how visual and motor experience modulates perceptual mechanism for configural processing of actions. While some ballet moves are performed by only one gender, male and female dancers train together and acquire visual knowledge of all ballet moves. 24 expert ballet dancers (12 female) and matched non-expert participants viewed pairs of upright and inverted point light female and common dance movements. Visual discrimination between different exemplars of the same movement presented upright was significantly better in experts than controls, while no differences were found when the same stimuli were presented upside down. These results suggest expertise influences configural action processing. Within the expert group, effects were stronger for female participants than for males, while no differences were found between movement types. This observer gender effect could suggest an additional role for motor familiarity in action perception, over and above visual experience. Our results are consistent with a specific motor contribution to configural processing of action

Visual Stability and the Motion Aftereffect: A Psychophysical Study Revealing Spatial Updating

Eye movements create an ever-changing image of the world on the retina. In particular, frequent saccades call for a compensatory mechanism to transform the changing visual information into a stable percept. To this end, the brain presumably uses internal copies of motor commands. Electrophysiological recordings of visual neurons in the primate lateral intraparietal cortex, the frontal eye fields, and the superior colliculus suggest that the receptive fields (RFs) of special neurons shift towards their post-saccadic positions before the onset of a saccade. However, the perceptual consequences of these shifts remain controversial. We wanted to test in humans whether a remapping of motion adaptation occurs in visual perception

Perception of Biological Motion in Schizophrenia and Healthy Individuals: A Behavioral and fMRI Study

Background: Anomalous visual perception is a common feature of schizophrenia plausibly associated with impaired social cognition that, in turn, could affect social behavior. Past research suggests impairment in biological motion perception in schizophrenia. Behavioral and functional magnetic resonance imaging (fMRI) experiments were conducted to verify the existence of this impairment, to clarify its perceptual basis, and to identify accompanying neural concomitants of those deficits. Methodology/Findings: In Experiment 1, we measured ability to detect biological motion portrayed by point-light animations embedded within masking noise. Experiment 2 measured discrimination accuracy for pairs of point-light biological motion sequences differing in the degree of perturbation of the kinematics portrayed in those sequences. Experiment 3 measured BOLD signals using event-related fMRI during a biological motion categorization task. Compared to healthy individuals, schizophrenia patients performed significantly worse on both the detection (Experiment 1) and discrimination (Experiment 2) tasks. Consistent with the behavioral results, the fMRI study revealed that healthy individuals exhibited strong activation to biological motion, but not to scrambled motion in the posterior portion of the superior temporal sulcus (STSp). Interestingly, strong STSp activation was also observed for scrambled or partially scrambled motion when the healthy participants perceived it as normal biological motion. On the other hand, STSp activation in schizophreni

Aufbau eines Sekundaerempfaengers fuer ein kohaerentes Kurzpulsradargeraet.

Es wird das elektrische Schaltungsprinzip sowie der mechanische Aufbau eines kohaerenten Kurzpulsradarempfaengers beschrieben. Insbesondere wird das Signal im ZF-Bereich bezueglich seines Spektrums und Pegelverhaltens analysiert, das Verhalten des Rauschpegels wird ebenfalls betrachtet

Psychotropic Use Among Older Residents of Board and Care Facilities

OBJECTIVE: To describe patterns of psychotropic use as well as clinically relevant and concurrent nonpsychotropic use among older residents of board and care facilities in 10 states. METHODS: Weighted use rates were based on data from a sample of 2054 residents aged 65 and older from 410 facilities in 10 states, drawn via a complex, multistage sampling design. Data, including drug name, use frequency, and PRN use, were collected on all drugs taken by the resident during a 7‐day period. During face‐to‐face interviews with residents and/or proxies, data were also collected on resident characteristics. SUBJECTS: The majority of subjects were female, white, and widowed. Average age was 82 years. Approximately 25% had a current mental or emotional condition, and 8% had been hospitalized for a psychiatric condition during the year before admission. More than half needed help with at least one activity of daily living. Forty percent had moderate or severe cognitive impairment, and 18% had received mental health care during the previous year. ANALYSES: Weighted descriptive analyses were performed with Software for Survey Data Analysis (SUDAAN), which accounts for the complex, multistage sampling design. RESULTS: Approximately 35% of the older residents used at least one psychoactive agent, with 30% of psychotropic users receiving two to four different psychotropic medications. Use rates decline with age, for psychotropics overall and for therapeutic classes. Results revealed potentially problematic polypharmacy in relation to drug duplication within therapeutic classes, use of multiple psychotropics across classes, and concurrent nonpsychotropic use. CONCLUSIONS: Compared with community‐dwelling older adults, this study revealed high psychotropic use rates among older board and care facility residents. Overall, our results suggest that serious consideration be given to the apparent need for systematic drug utilization review, a potentially useful program that is mandated in other settings. 1995 The American Geriatrics Societ

Regulatory environment and psychotropic use in board-and-care facilities: Results of a 10-state study

Background. Largely unsupervised administration of drugs and the potential for overuse of psychotropic agents in residential care facilities have emerged as major public policy concerns. In a large multistate study, we examined patterns of psychotropic prescription and use by facility licensure status and the extensiveness of state regulations. Methods. Descriptive analyses were based on a sample of 2,949 residents from 493 board-and-care facilities in to states, drawn via a complex, multistage sampling design. States were purposively selected based on the stringency of their board-and- care regulatory system, and samples of facilities were drawn, stratified by licensure status and home size. Residents, were randomly selected within the sampled facilities. Weighted analyses were performed with Software for Survey Data Analysis (SUDAAN), accounting for the complex sampling design. Results. Approximately 43% of the residents were prescribed and 41% used at least one psychotropic agent, primarily on a routinely scheduled basis. Antipsychotics were prescribed to 22% and used by 21%; antidepressants were prescribed to 17% and taken by 16%; antimanic agents were prescribed to and used by 4%; and anxiolytics, sedatives, or hypnotics were prescribed to 17% and used by 14%. Among psychotropic users, over 50% had not had mental health services in the prior year: 25% had no psychiatric history. Among licensed facilities, prescription and use of psychotropics, particularly antipsychotics, was significantly higher among residents of homes located in states with limited regulatory systems. Conclusions. Results revealed high rates of psychotropic prescription and use, and not inconsequential levels of polypharmacy - within and across therapeutic classes - among board-and-care facility residents. Frequently, psychotropics were not used as an adjunct to alternative treatments, and were not associated with a psychiatric history. Extent of psychotropic use was related to the regulatory environment, suggesting that more extensive regulations and monitoring may reduce psychoactive drug use in board-and-care facilities, and more adequately ensure the appropriateness of such treatment