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The hippocampus, prefrontal cortex, and perirhinal cortex are critical to incidental order memory.
Considerable research in rodents and humans indicates the hippocampus and prefrontal cortex are essential for remembering temporal relationships among stimuli, and accumulating evidence suggests the perirhinal cortex may also be involved. However, experimental parameters differ substantially across studies, which limits our ability to fully understand the fundamental contributions of these structures. In fact, previous studies vary in the type of temporal memory they emphasize (e.g., order, sequence, or separation in time), the stimuli and responses they use (e.g., trial-unique or repeated sequences, and incidental or rewarded behavior), and the degree to which they control for potential confounding factors (e.g., primary and recency effects, or order memory deficits secondary to item memory impairments). To help integrate these findings, we developed a new paradigm testing incidental memory for trial-unique series of events, and concurrently assessed order and item memory in animals with damage to the hippocampus, prefrontal cortex, or perirhinal cortex. We found that this new approach led to robust order and item memory, and that hippocampal, prefrontal and perirhinal damage selectively impaired order memory. These findings suggest the hippocampus, prefrontal cortex and perirhinal cortex are part of a broad network of structures essential for incidentally learning the order of events in episodic memory
Some General Aspects of Geomagnetically Trapped Radiation
Physical principles of radiation belts and entrapment of radiation by geomagnetic field
Carrier extraction circuit
Feedback loop extracts demodulated reference signals from IF input and feeds signal back to demodulator. Since reference signal is extracted directly from carrier, no separate reference need be transmitted. Circuit obtains coherent carrier from balanced or unbalanced four-phase signal of varying characteristics
Evidentiary Problems in—And Solutions For—the Uniform Commercial Code
The Uniform Commercial Code does not offer a systematic approach to the rules governing the evidentiary relationships of parties to commercial litigation. In this article, Professors Allen and Hillman present a general analytical approach to proof rules, highlight the shortcomings of the Code\u27s evidentiary provisions, and discuss the inevitable confusion in the case law construing the Code. They propose an amendment to the Code designed to clarify and improve the Code approach
The Rotation Velocity - Density Relation
We have assembled 21-cm linewidths for 376 of the 732 galaxies in a
magnitude-limited redshift survey of the the Perseus-Pisces region.
We analyze a distance limited subset of 271 galaxies (131 widths) to examine
the relationship between linewidth and local density. The sample indicates that
galaxies with linewidths km/s are absent from regions where the
galaxy density is galaxies Mpc (). This
effect is in the direction predicted by standard CDM models. Galaxies with
linewidths 480 km/s appear throughout the sample.
The observational constraints could be substantially improved with a larger
sample, IR photometry, and more uniform 21-cm data.Comment: 11 pages, 9 postscript figures; to appear in July 1996 A
Lathe attachment used to machine elliptical cones
Close-tolerance elliptical cones are fabricated by cutting-tool guide assembly used with conventional tracer cartridge on turret lathe accurately produced in two machine operations
Apparatus for machining geometric cones Patent
Rotary spindle lathe attachments for machining geometrical cone
Measurements of the free-bound and free-free continua of nitrogen, oxygen and air
Photometric measurement of radiation in high temperature ai
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