Document Detail


Emergence of spatio-temporal patterns in neuronal activity.
MedLine Citation:
PMID:  9755517     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This paper explores if dynamic modulation of coherent firing serves cortical functions. We recorded neuronal activity in the frontal cortex of behaving monkeys and found that temporal coincidences of spikes firing of different neurons can emerge within a fraction of a second in relation to the animal behavior. The temporal patterns of the correlation could not be predicted from the modulations of the neurons firing rate and finally, the patterns of correlation depend on the distance between neurons. These findings call for a revision of prevailing models of neural coding that solely rely on firing rates. The findings suggest that modification of neuronal interactions can serve as a mechanism by which neurons associate rapidly into a functional group in order to perform a specific computational task. Increased correlation between members of the groups, and decreased or negative correlation with others, enhance the ability to dissociate one group from concurrently activated competing groups. Such modulation of neuronal interactions allows each neuron to become a member of several different groups and participate in different computational tasks.
Authors:
I Haalman; E Vaadia
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Zeitschrift für Naturforschung. C, Journal of biosciences     Volume:  53     ISSN:  0939-5075     ISO Abbreviation:  Z. Naturforsch., C, J. Biosci.     Publication Date:    1998 Jul-Aug
Date Detail:
Created Date:  1998-10-26     Completed Date:  1998-10-26     Revised Date:  2014-03-25    
Medline Journal Info:
Nlm Unique ID:  8912155     Medline TA:  Z Naturforsch C     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  657-69     Citation Subset:  IM; S    
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MeSH Terms
Descriptor/Qualifier:
Animals
Brain Mapping*
Conditioning, Operant
Cues
Female
Frontal Lobe / physiology*
Macaca mulatta
Models, Neurological
Models, Psychological
Neurons / physiology*
Photic Stimulation
Reaction Time
Reward
Space Perception / physiology*
Time Factors
Time Perception*

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


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