Document Detail

The contribution of the outer retina to color constancy: a general model for color constancy synthesized from primate and fish data.
MedLine Citation:
PMID:  17592668     Owner:  NLM     Status:  MEDLINE    
Color constancy is one of the most impressive features of color vision systems. Although the phenomenon has been studied for decades, its underlying neuronal mechanism remains unresolved. Literature indicates an early, possibly retinal mechanism and a late, possibly cortical mechanism. The early mechanism seems to involve chromatic spatial integration and performs the critical calculations for color constancy. The late mechanism seems to make the color manifest. We briefly review the current evidence for each mechanism. We discuss in more detail a model for the early mechanism that is based on direct measurements of goldfish outer retinal processing and induces color constancy and color contrast. In this study we extrapolate this model to primate retina, illustrating that it is highly likely that a similar mechanism is also present in primates. The logical consequence of our experimental work in goldfish and our model is that the wiring of the cone/horizontal cell system sets the reference point for color vision (i.e., it sets the white point for that animal).
M T Vanleeuwen; C Joselevitch; I Fahrenfort; M Kamermans
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Publication Detail:
Type:  Journal Article; Review     Date:  2007-06-26
Journal Detail:
Title:  Visual neuroscience     Volume:  24     ISSN:  0952-5238     ISO Abbreviation:  Vis. Neurosci.     Publication Date:    2007 May-Jun
Date Detail:
Created Date:  2007-09-07     Completed Date:  2007-11-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8809466     Medline TA:  Vis Neurosci     Country:  England    
Other Details:
Languages:  eng     Pagination:  277-90     Citation Subset:  IM    
Retinal Signal Processing, Netherlands Institute for Neuroscience, Amsterdam, The Netherlands.
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MeSH Terms
Color Perception / physiology*
Contrast Sensitivity / physiology*
Models, Neurological
Neurons / physiology
Retina / cytology,  physiology*

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