Document Detail

Color contrast and contextual influences on color appearance.
MedLine Citation:
PMID:  12678648     Owner:  NLM     Status:  MEDLINE    
We used a hue-scaling task to examine changes in color perception resulting from adaptation or induction to color contrast in spatially-varying backgrounds. Observers judged the perceived color of tests after or while viewing backgrounds composed of color differences along selected axes in color space. Both contrast adaptation and contrast induction produced large and selective shifts in perceived hue angle, and interacted in similar ways when combined, suggesting that they had functionally similar influences on perceived hue. Both also consistently biased perceived hue away from the color axis of the background, implying response changes within multiple channels tuned to different directions in color space. Selective hue changes were also observed when the gamut of colors forming the backgrounds were drawn from natural color distributions. This suggests that color perception in different environments may be systematically biased by adaptation to the distributions of colors in those environments. However, we did not find these biases when the same test stimuli were judged after adapting to actual natural scenes.
Michael A Webster; Gokhan Malkoc; Aaron C Bilson; Shernaaz M Webster
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of vision     Volume:  2     ISSN:  1534-7362     ISO Abbreviation:  J Vis     Publication Date:  2002  
Date Detail:
Created Date:  2003-04-07     Completed Date:  2003-04-23     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  101147197     Medline TA:  J Vis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  505-19     Citation Subset:  IM    
Department of Psychology, University of Nevada Reno, Reno, NV, USA.
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MeSH Terms
Adaptation, Ocular / physiology*
Color Perception / physiology*
Color Perception Tests
Contrast Sensitivity / physiology*
Sensory Thresholds / physiology
Vision, Ocular / physiology
Grant Support

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