Document Detail


Adaptive shift of visual sensitivity balance under ambient illuminant change.
MedLine Citation:
PMID:  9729850     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We examined the relationship between the ambient illuminant chromaticity and changes in the sensitivity balance of the visual system, using illuminants of various chromaticities. The sensitivity of observers was measured in a room with a variable-chromaticity illuminant. The observer's state of chromatic adaptation was measured with unique-white settings. Our results showed that the change in visual sensitivity has a nonlinear correlation with the change in illuminant chromaticity; chromatic adaptation was nearly complete for desaturated illuminants, but the degree of chromatic adaptation became worse as the illuminant became more saturated. We defined a new index, relative cone weights, which represents this relationship well. To measure the role of chromatic induction from the immediate-surround area of the matching stimulus, we performed additional experiments by presenting the test inside a colored or black immediate surround. The results showed that the unique-white settings were not disturbed by the change in immediate-surround color. Our results imply that the room illuminant chromaticity was the primary factor in changing the observer's state of chromatic adaptation.
Authors:
I Kuriki; K Uchikawa
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics, image science, and vision     Volume:  15     ISSN:  1084-7529     ISO Abbreviation:  J Opt Soc Am A Opt Image Sci Vis     Publication Date:  1998 Sep 
Date Detail:
Created Date:  1998-10-02     Completed Date:  1998-10-02     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:  2263-74     Citation Subset:  IM    
Affiliation:
Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, Yokohama, Japan. ikuriki@n.cc.titech.ac.jp
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological* / physiology
Color Perception / physiology*
Humans
Lighting*
Photic Stimulation / methods

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


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