Document Detail

Cone contrasts do not predict color constancy.
MedLine Citation:
PMID:  16961993     Owner:  NLM     Status:  MEDLINE    
A successive, asymmetric color-matching paradigm was used to investigate the link between cone contrast and the stability of perceived colors. We measured the perceived color shifts of 10 Munsell samples, induced by test illuminant A, simulated in u'v' color space. The capacity of the visual system to resist these shifts, otherwise known as color constancy, is measured in terms of the Brunswik ratio, BR. Cone contrasts are calculated with respect to either the physical or perceived background. Subjective cone contrasts show a better fit to the von Kries law than those based on the physical background. Complete cone adaptation occurs when color constancy is high. However we show conditions where cone adaptation seems complete but color constancy is poor.
I J Murray; A Daugirdiene; R Stanikunas; H Vaitkevicius; J J Kulikowski
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Visual neuroscience     Volume:  23     ISSN:  0952-5238     ISO Abbreviation:  Vis. Neurosci.     Publication Date:    2006 May-Aug
Date Detail:
Created Date:  2006-09-11     Completed Date:  2006-10-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8809466     Medline TA:  Vis Neurosci     Country:  England    
Other Details:
Languages:  eng     Pagination:  543-7     Citation Subset:  IM    
Faculty of Life Sciences, Moffat Building, University of Manchester, Manchester, United Kingdom.
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MeSH Terms
Color Perception / physiology*
Contrast Sensitivity / physiology*
Photic Stimulation / methods
Predictive Value of Tests
Retinal Cone Photoreceptor Cells / physiology*
Space Perception

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