Document Detail


Perceived motion of a colored spot in a noisy achromatic background.
MedLine Citation:
PMID:  8047409     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
It is shown that human observers can use color both for detecting and for discriminating motion. The contributions of chromaticity and luminance to the detection and discrimination of motion are investigated with a high-contrast, nonisoluminant stimulus. The motion stimulus is a rectangular 'particle' defined by its luminance and chromaticity, which moves against a background containing luminance noise. Although the luminance noise is found to make achromatic particles undetectable over a large range of luminances, the addition of color to a particle can render it detectable and also enable accurate speed discriminations to be made. The contributions of both luminance and chromaticity were measured. The effect of changing the hue angle of the particle as it moves was also examined, and it was found that the detectability of motion is low in that circumstance.
Authors:
T Kumar; B R Beutter; D A Glaser
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Perception     Volume:  22     ISSN:  0301-0066     ISO Abbreviation:  Perception     Publication Date:  1993  
Date Detail:
Created Date:  1994-08-30     Completed Date:  1994-08-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0372307     Medline TA:  Perception     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1205-26     Citation Subset:  IM    
Affiliation:
Department of Molecular and Cell Biology, University of California, Berkeley 94720.
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MeSH Terms
Descriptor/Qualifier:
Acoustic Stimulation
Color Perception*
Humans
Motion Perception*
Noise*
Photic Stimulation

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


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