Document Detail


Firing rates and dynamic correlated activities of ganglion cells both contribute to retinal information processing.
MedLine Citation:
PMID:  15261094     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In the present study, the electrical activities of paired retinal ganglion cells, under full field light stimuli with a variety of chromatic configurations, were recorded from a small functioning piece of retina using multi-electrode array (MEA). Neurons that had increased firings at light-ON and -OFF transients and did not show color-opponent properties were investigated. Single neuronal analysis showed that firing rate of each individual neuron was dependent on the intensity of illumination. Multi-unit analyses revealed that adjacent neurons often fired in synchrony in response to light stimulation. However, in some cases, the strength of correlation between the paired neurons was higher when the retina was exposed to red or green light, and the correlation was attenuated when yellow or white light was given. This seems to suggest that the ensemble activity of non-color-opponent ganglion cells might partly participate in color-information processing, with the red- and green-pathway inputs influencing each other. Such arrangement reflects principle of parsimony: the firing rates of single neuron represent the luminance intensity, and the correlated activities may tell the brain about the color information.
Authors:
Ai-Hua Chen; Yi Zhou; Hai-Qing Gong; Pei-Ji Liang
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Publication Detail:
Type:  Comparative Study; In Vitro; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Brain research     Volume:  1017     ISSN:  0006-8993     ISO Abbreviation:  Brain Res.     Publication Date:  2004 Aug 
Date Detail:
Created Date:  2004-07-20     Completed Date:  2004-10-04     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0045503     Medline TA:  Brain Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  13-20     Citation Subset:  IM    
Affiliation:
Shanghai Institute of Physiology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Shanghai 200031, PR China.
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MeSH Terms
Descriptor/Qualifier:
Action Potentials / physiology*,  radiation effects
Animals
Animals, Newborn
Chickens
Color
Dose-Response Relationship, Radiation
Light
Neural Networks (Computer)
Nonlinear Dynamics*
Photic Stimulation / methods
Retina / cytology*
Retinal Ganglion Cells / physiology*,  radiation effects
Statistics as Topic

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


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