Document Detail

Role of perceptual organization in chromatic induction.
MedLine Citation:
PMID:  10680626     Owner:  NLM     Status:  MEDLINE    
Color matches between two small patches were made in a display containing ten larger regions of different chromaticities. The spatial organization of the ten regions was varied while keeping constant the immediate surround of each patch as well as the space-average chromaticity of the entire stimulus. Different spatial arrangements were designed to alter the perceptual organization inferred by the observer without changing the ensemble of chromaticities actually in view. For example, one arrangement of the ten regions was consistent with five surfaces under two distinct illuminations, with one edge within the display (an "apparent illumination edge") dividing the stimulus into two areas, one under illuminant A and the other under illuminant C. Another spatial arrangement had the ten regions configured to induce an observer to infer ten surfaces under a single illumination. When the ten regions were arranged with an apparent illumination edge, the patch within the area of illuminant C was perceived as bluer than when the same patch and immediate surround were presented without an apparent illumination edge. The results are accounted for by positing that observers group together regions sharing the same inferred illumination, with a consequent effect on color perception: A fixed patch-within-surround shifts in hue and saturation toward the perceived illumination. We suggest that the change in color perception in a complex scene that results from a difference in real illumination may be caused by the inferred illumination at the perceptual level, not directly by the physical change in the light absorbed by photoreceptors.
J A Schirillo; S K Shevell
Related Documents :
9168596 - Role of remote adaptation in perceived subjective color.
22001286 - Modulation of the temporal pattern of calling behavior of female spodoptera littoralis ...
16781726 - Interactions of environmental factors influencing pupal coloration in swallowtail butte...
1084336 - An acquired color defect of the opponent-color system.
21811856 - Acromioclavicular motion after surgical reconstruction.
24685836 - Long-term improvement of speech perception with the fine structure processing coding st...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics, image science, and vision     Volume:  17     ISSN:  1084-7529     ISO Abbreviation:  J Opt Soc Am A Opt Image Sci Vis     Publication Date:  2000 Feb 
Date Detail:
Created Date:  2000-03-02     Completed Date:  2000-03-02     Revised Date:  2007-11-14    
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:  244-54     Citation Subset:  IM    
Department of Psychology, Wake Forest University, Winston-Salem, North Carolina 27109, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Color Perception / physiology*
Photic Stimulation / methods
Visual Perception / physiology*
Grant Support

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

Previous Document:  Chromatic contrast sensitivity: the role of absolute threshold and gain constant in differences betw...
Next Document:  Invariant cone-excitation ratios may predict transparency.