Document Detail


Sensory response properties of pyramidal tract neurons in the precentral motor cortex and postcentral gyrus of the rhesus monkey.
MedLine Citation:
PMID:  6698144     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Pyramidal tract neurons (PTNs) were identified in precentral motor cortex (MI) and in postcentral cortex (PoC) of a monkey trained to pronate and supinate its forearm. PTN responses to passive, ramp-form displacements of the forearm were examined in relation to the size of the neuron (as reflected by its antidromic latency). Larger PTNs tended to exhibit transient responses to passive limb displacement, whereas smaller PTNs more frequently showed sustained responses. These findings suggest that smaller PTNs, that make up the majority of the total PTN population, receive continuous feedback during posture as well as during the dynamic phase of movement.
Authors:
C Fromm; S P Wise; E V Evarts
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Experimental brain research     Volume:  54     ISSN:  0014-4819     ISO Abbreviation:  Exp Brain Res     Publication Date:  1984  
Date Detail:
Created Date:  1984-04-26     Completed Date:  1984-04-26     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  177-85     Citation Subset:  IM; S    
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MeSH Terms
Descriptor/Qualifier:
Afferent Pathways / physiology
Animals
Brain Mapping
Evoked Potentials, Somatosensory
Forearm / innervation*
Kinesthesis / physiology*
Macaca mulatta
Mechanoreceptors / physiology*
Motor Cortex / physiology*
Muscle Contraction
Muscles / innervation
Neurons / physiology
Pyramidal Tracts / physiology*
Reaction Time / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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