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Main Title Mechanisms Underlying Somatosensory Cortical Dynamics: 1. In vivo Studies.
Author Lee, C. J. ; Whitsel, B. L. ;
CORP Author North Carolina Univ. at Chapel Hill. Dept. of Psychology.;Health Effects Research Lab., Research Triangle Park, NC.
Publisher c1992
Year Published 1992
Report Number R-818321010; EPA/600/J-92/377;
Stock Number PB93-107217
Additional Subjects Somatosensory cortex ; Neurons ; In vivo analysis ; Neuroregulators ; Afferent neurons ; Macaca mulatta ; Macaca fascicularis ; Action potentials ; Mechanoreceptors ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB93-107217 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 28p
Abstract SI neurons undergo substantial and rapid response modifications (either increases or decreases) during repetitive tactile stimulation. Recovery occurs in a few minutes following cessation of stimulation. The modifications are reproducible (1) if stimulus parameters are not changed and (2) if time for recovery is provided between exposures to repetitive stimuli. Stimuli identical to those which modify SI neuron response rarely lead to changes in the response of mechanoreceptive afferents. The effects of repetitive brushing stimuli on distribution of sensitivity within the RFs of SI neurons are complex and differ from one neuron to the next, but there is a common ingredient: the response generated by stimulus contact with one (or more rarely, several) RF sector(s) becomes enhanced. The changes in the distribution of sensitivity within the RF exhibited by different SI neurons sampled in the same radial penetration are consistent, whereas in tangential penetrations different neurons exhibit diverse, apparently unrelated changes. Simultaneous multichannel recordings reveal that a repetitive stimulus exerts similar effects on the response and RFs of local (separated by no more than 100 micrometers) neuron groupings.
Supplementary Notes Pub. in Cerebral Cortex Jnl., v2 n2 p81-106 Mar/Apr 92. See also PB93-107225. Sponsored by Health Effects Research Lab., Research Triangle Park, NC.
Title Annotations Reprint: Mechanisms Underlying Somatosensory Cortical Dynamics: 1. In vivo Studies.
Category Codes 57I
NTIS Prices PC A03/MF A01
Primary Description 600/10
Document Type NT
Cataloging Source NTIS/MT
Control Number 234225647
Origin NTIS
Type CAT