Document Detail

Pattern-color separable pathways predict sensitivity to simple colored patterns.
MedLine Citation:
PMID:  8854997     Owner:  NLM     Status:  MEDLINE    
We have studied how contrast threshold sensitivity depends jointly on pattern and color. We measured sensitivity to colored Gabor patches from 0.5 to 8 c/deg. At each spatial frequency, we measured in many different color directions. We analyze the sensitivity measurements using a series of nested models. We conclude that a model consisting of three pattern-color separable mechanisms predicts detection performance nearly as well as fitting psychometric functions independently. We derive the pattern and color sensitivities of the separable mechanisms from the experimental data. Two derived mechanisms are spatially lowpass and spectrally color-opponent. The third mechanism is spatially bandpass and spectrally broadband.
A B Poirson; B A Wandell
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  36     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1996 Feb 
Date Detail:
Created Date:  1997-02-24     Completed Date:  1997-02-24     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  515-26     Citation Subset:  IM    
Department of Psychology, Stanford University, Stanford, CA 94305, USA.
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MeSH Terms
Color Perception / physiology*
Models, Biological
Pattern Recognition, Visual / physiology*
Sensory Thresholds / physiology
Time Factors
Grant Support

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