Document Detail

Stochastic independence of color-vision mechanisms confirmed by a subthreshold summation paradigm.
MedLine Citation:
PMID:  10935878     Owner:  NLM     Status:  MEDLINE    
We have used a subthreshold summation protocol to analyze spatial color-color interaction. By means of a CRT color monitor, we measured the threshold contours for a spatial frequency of 0.5 cycles/degree. Heterochromatic flicker photometry was used to obtain isoluminance. The results suggest that the blue-yellow (b-y) and red-green (r-g) contrast thresholds remained unchanged by the addition of fixed r-g and b-y subthreshold pedestals. Our subthreshold summation data then support the stochastic independence of colorvision mechanisms derived from Mullen and Sankeralli's work [Vision Res. 39, 733 (1999)] despite the differences that exist between the two experimental methods.
J A García; J L Nieves; E Valero; J Romero
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics, image science, and vision     Volume:  17     ISSN:  1084-7529     ISO Abbreviation:  J Opt Soc Am A Opt Image Sci Vis     Publication Date:  2000 Aug 
Date Detail:
Created Date:  2000-08-30     Completed Date:  2000-08-30     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9800943     Medline TA:  J Opt Soc Am A Opt Image Sci Vis     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1485-8     Citation Subset:  IM    
Departamento de Optica, Facultad de Ciencias, Universidad de Granada, Spain.
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MeSH Terms
Color Perception / physiology*
Models, Biological*
Sensory Thresholds*
Stochastic Processes

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