Document Detail

Influence of achromatic surrounds on categorical perception of surface colors.
MedLine Citation:
PMID:  2623830     Owner:  NLM     Status:  MEDLINE    
Color samples selected from the OSA Uniform Color Scales set were seen isolated in a dark field, illuminated by hidden projectors. These appeared as self-luminous aperture colors when thus isolated. We employed a categorical color-naming procedure to assess color appearance. Achromatic surrounds of 33 min width, if adjacent to samples subtending about 2.2 deg, were sufficient to render normal categorical surface-color perception. As the size of surrounds decreased, color naming shifted from that normally observed in the surface-color mode to that appropriate to the aperture-color mode. For isolated samples, brown was almost never seen, being most often replaced by orange; a white border less than one-sixtieth the width of the color samples was sufficient to restore its perception in an otherwise dark field. The reflectance of the surround and the gap between test and surround stimuli were also examined and found to be important factors in surface color perception, whereas the overall luminance level was not.
H Uchikawa; K Uchikawa; R M Boynton
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  29     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1989  
Date Detail:
Created Date:  1990-03-29     Completed Date:  1990-03-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  881-90     Citation Subset:  IM    
Department of Information Processing, Tokyo Institute of Technology Graduate School, Yokohama, Japan.
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MeSH Terms
Color Perception / physiology*
Middle Aged

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

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