Document Detail

Adaptive shift of visual sensitivity balance under ambient illuminant change.
MedLine Citation:
PMID:  9729850     Owner:  NLM     Status:  MEDLINE    
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.
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    
Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, Yokohama, Japan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Adaptation, Physiological* / physiology
Color Perception / physiology*
Photic Stimulation / methods

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

Previous Document:  Interocular suppression of a half-occluded region of stereoscopic images.
Next Document:  Neural network approach for Compton-scattering imaging.