Document Detail

Cerebellar nuclear activity in relation to simple movements.
MedLine Citation:
PMID:  3416957     Owner:  NLM     Status:  MEDLINE    
Single unit activity in the fastigial, interpositus and dentate cerebellar nuclei was recorded in relation to simple elbow flexion and extension movements in two macaque monkeys. In common with proximal muscle activity, 94% of the task-related neurons had qualitatively similar discharge patterns for both directions of forearm movement. In many cases the flexion and extension discharge was virtually identical, but some cells had a distinct directional bias. The very few neurons which were directionally specific were located in the dentate and interpositus. Two had tonic activity well correlated to elbow angle. Task-related changes in discharge rate occurred earliest in dentate and latest in fastigial, but almost always during the period of concomitant proximal and elbow EMG changes. Correlations of phasic activity with movement velocity were uniformly weak. Many eye movement-related neurons were encountered in the fastigial, dentate and y-group nuclei. Fastigial eye cells, both bursting and tonic, tended to be highly direction specific, whereas dentate eye cells were usually omnidirectional and variable. For both arm and eye cerebellar cells, the directional preferences of phasic and tonic discharge, in the same neuron, could be opposed to one another.
W A MacKay
Related Documents :
20337197 - Discharge patterns of human genioglossus motor units during arousal from sleep.
22317007 - Automatic sleep stage classification based on easy to register signals as a validation ...
22893077 - Argon laser iridoplasty for optic obstruction of boston keratoprosthesis.
22884237 - Sleep disturbances in bipolar disorder during remission.
11688667 - Scanning laser ophthalmoscope fundus cyclometry in near-natural viewing conditions.
21683897 - Rocking synchronizes brain waves during a short nap.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Experimental brain research     Volume:  71     ISSN:  0014-4819     ISO Abbreviation:  Exp Brain Res     Publication Date:  1988  
Date Detail:
Created Date:  1988-10-20     Completed Date:  1988-10-20     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:  47-58     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Action Potentials
Brain Mapping
Cerebellar Nuclei / physiology*
Elbow / innervation,  physiology
Eye Movements
Muscle Contraction
Photic Stimulation
Psychomotor Performance / physiology*

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

Previous Document:  Topographic relations between ocular dominance and orientation columns in the cat striate cortex.
Next Document:  Coordinated isometric muscle commands adequately and erroneously programmed for the weight during li...