Document Detail

Color from motion: separate contributions of chromaticity and luminance.
MedLine Citation:
PMID:  9616468     Owner:  NLM     Status:  MEDLINE    
'Color from motion' describes the perception of a spread of subjective color over achromatic regions seen as moving. The effect is produced with a stimulus display consisting of colored dots, randomly placed upon a white field, with dots in the test region differing in both chromaticity and luminance from those in the surround. Evidence is presented suggesting that color from motion may be regulated by mechanisms different from those for contour formation and color contrast. (1) Results based on ratings show that, in the absence of luminance differences between the dots in the test and those in the surround regions, chromaticity differences alone are sufficient to produce color spread from motion. As the equiluminance point is approached, subjective color spread is seen despite a reduction in the strength of the subjective contour. Thus, contour formation is not likely to be a prerequisite for color from motion. (2) Color matches show that the hue and saturation of the subjective color spread are determined largely by the chromaticity and the luminance of the dots in the test region, not by those of the dots in the surround for the values explored. This suggests that color from motion may arise in sites distinct from those responsible for the regulation of color contrast.
E Miyahara; C M Cicerone
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Perception     Volume:  26     ISSN:  0301-0066     ISO Abbreviation:  Perception     Publication Date:  1997  
Date Detail:
Created Date:  1998-06-25     Completed Date:  1998-06-25     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0372307     Medline TA:  Perception     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1381-96     Citation Subset:  IM    
Department of Cognitive Sciences, University of California, Irvine 92697, USA.
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MeSH Terms
Color Perception*
Motion Perception*
Optical Illusions*
Grant Support

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