Document Detail


Color and lightness constancy in different perceptual tasks.
MedLine Citation:
PMID:  9861694     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Color and lightness constancy with respect to changing illumination was studied with three different perceptual tasks: ranking of colored papers according (1) to their lightness and (2) to their chromatic similarity in photopic, mesopic, and scotopic states of adaptation, and (3) recognition of remembered colored papers after changes of illumination in photopic vision. Constancy was found in the second task, only. Excitations of light receptors and luminance channels were computed to simulate the empirical rank orders. Results of the first task can be predicted with the hypothesis that luminance channels are activated, if lightness is asked for. Sequences arranged with respect to chromatic similarity were found independent of the illuminant spectra, even if the calculated rank orders of cone excitation were changed in the altered illumination.
Authors:
N Schneider; C von Campenhausen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biological cybernetics     Volume:  79     ISSN:  0340-1200     ISO Abbreviation:  Biol Cybern     Publication Date:  1998 Dec 
Date Detail:
Created Date:  1999-01-08     Completed Date:  1999-01-08     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7502533     Medline TA:  Biol Cybern     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  445-55     Citation Subset:  IM    
Affiliation:
Zoologisches Institut, Johannes Gutenberg Universität, Mainz, Germany.
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Ocular / physiology
Adult
Color
Color Perception / physiology*
Discrimination Learning
Female
Humans
Male
Photic Stimulation
Retinal Cone Photoreceptor Cells / physiology*
Sensory Thresholds / physiology

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


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