Document Detail

The effects of prolonged temporal modulation on the differential response of color mechanisms.
MedLine Citation:
PMID:  1304084     Owner:  NLM     Status:  MEDLINE    
The identification of three independent cardinal directions in color space suggests the existence of three independent post-receptoral mechanisms that can be desensitized by habituation to a temporally modulated light. In this paper, the differential response of each cardinal mechanism is estimated over a range of inputs before and after habituation. Simple mathematical considerations show that the threshold elevations following temporal modulation are not consistent with multiplicative gain changes; rather, these elevations require a change in the shape of each cardinal mechanism's response function. With this method, the effects of habituation can also be differentiated from the effects of a change in the steady adapting light.
A G Shapiro; Q Zaidi
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  32     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1992 Nov 
Date Detail:
Created Date:  1993-06-30     Completed Date:  1993-06-30     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  2065-75     Citation Subset:  IM    
Department of Psychology, Columbia University, New York, NY 10027.
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MeSH Terms
Adaptation, Ocular / physiology*
Color Perception / physiology*
Habituation, Psychophysiologic
Models, Biological
Photic Stimulation
Sensory Thresholds
Grant Support

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