Document Detail

Simple and complex spike activity of cerebellar Purkinje cells during active and passive movements in the awake monkey.
MedLine Citation:
PMID:  6887028     Owner:  NLM     Status:  MEDLINE    
Two Rhesus monkeys (Macaca mulatta) were trained to pursue a target light signal by moving the hand at the wrist joint. Additionally, a d.c. motor could be attached to the lever in order to perform similar passive movements. During performance of the task, single Purkinje cells were recorded from the intermediate part of the cerebellar anterior lobe. Electromyographic activity of the flexor and extensor muscles of the forearm was recorded simultaneously. Passive hand movements evoked changes in the complex spike and simple spike discharge of Purkinje cell. The complex spike responded most sensitively to the beginning of the movement; the activity pattern had phasic character and could be related specifically to the movement direction. The simple spike response was usually weak and hence revealed-less specific relations. During active movements the simple spike frequency change was generally stronger than during passive movements and reached a maximum (or minimum) at the beginning of hand deflexion. The complex spike activity during active movements was characterized by a contrast between the time phases before and after the movement onset. In most of the cases, where a phase of increased activity stopped at the movement onset, the sensory feed-back signal seen during passive movements was cancelled. The possible consequences of the convergence of the complex and simple spike signal for the motor control function of the cerebellum are discussed.
E Bauswein; F P Kolb; B Leimbeck; F J Rubia
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of physiology     Volume:  339     ISSN:  0022-3751     ISO Abbreviation:  J. Physiol. (Lond.)     Publication Date:  1983 Jun 
Date Detail:
Created Date:  1983-10-08     Completed Date:  1983-10-08     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0266262     Medline TA:  J Physiol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  379-94     Citation Subset:  IM    
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MeSH Terms
Action Potentials
Macaca mulatta
Purkinje Cells / physiology*

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