Document Detail

Prior information preshapes the population representation of movement direction in motor cortex.
MedLine Citation:
PMID:  9507975     Owner:  NLM     Status:  MEDLINE    
Single neuron activity was recorded in monkey motor cortex during the execution of pointing movements in six directions. The amount of prior information was manipulated by varying the range of precued directions. A distribution of neural population activation was constructed in the space of movement directions. This population representation of movement direction was preshaped by the precue. Peak location and width reflected the precued range of movement directions. From this preshaped form, the population representation evolved continuously in time and gradually in parameter space toward a more sharply peaked distribution centered on the parameter value specified by the response signal. A theoretical model of motor programming generated a similar temporal evolution of an activation field representing movement direction.
A Bastian; A Riehle; W Erlhagen; G Schöner
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neuroreport     Volume:  9     ISSN:  0959-4965     ISO Abbreviation:  Neuroreport     Publication Date:  1998 Jan 
Date Detail:
Created Date:  1998-04-29     Completed Date:  1998-04-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9100935     Medline TA:  Neuroreport     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  315-9     Citation Subset:  IM    
Center for Research in Cognitive Neuroscience, CNRS, Marseille, France.
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MeSH Terms
Macaca mulatta
Models, Neurological
Motor Cortex / cytology,  physiology*
Movement / physiology*
Signal Transduction / physiology

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