Document Detail

Color channels, not color appearance or color categories, guide visual search for desaturated color targets.
MedLine Citation:
PMID:  20713637     Owner:  NLM     Status:  MEDLINE    
In this article, we report that in visual search, desaturated reddish targets are much easier to find than other desaturated targets, even when perceptual differences between targets and distractors are carefully equated. Observers searched for desaturated targets among mixtures of white and saturated distractors. Reaction times were hundreds of milliseconds faster for the most effective (reddish) targets than for the least effective (purplish) targets. The advantage for desaturated reds did not reflect an advantage for the lexical category "pink," because reaction times did not follow named color categories. Many pink stimuli were not found quickly, and many quickly found stimuli were not labeled "pink." Other possible explanations (e.g., linear-separability effects) also failed. Instead, we propose that guidance of visual search for desaturated colors is based on a combination of low-level color-opponent signals that is different from the combinations that produce perceived color. We speculate that this guidance might reflect a specialization for human skin.
Delwin T Lindsey; Angela M Brown; Ester Reijnen; Anina N Rich; Yoana I Kuzmova; Jeremy M Wolfe
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2010-08-16
Journal Detail:
Title:  Psychological science     Volume:  21     ISSN:  1467-9280     ISO Abbreviation:  Psychol Sci     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-15     Completed Date:  2011-01-11     Revised Date:  2014-09-15    
Medline Journal Info:
Nlm Unique ID:  9007542     Medline TA:  Psychol Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1208-14     Citation Subset:  IM    
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MeSH Terms
Color Perception*
Pattern Recognition, Visual*
Photic Stimulation
Reaction Time
Space Perception
Grant Support
R01 EY017001/EY/NEI NIH HHS; R01 EY017001-04/EY/NEI NIH HHS; R01-EY017001/EY/NEI NIH HHS; R01-MH56020/MH/NIMH NIH HHS; R21-EY018321/EY/NEI NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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