Document Detail

Absence of smooth motion perception in color vision.
MedLine Citation:
PMID:  1604835     Owner:  NLM     Status:  MEDLINE    
We have tested the behavioral evidence for a separation of the processing of color contrast from motion in the human visual system. Two different aspects of motion perception are examined; the identification of the direction of movement of a chromatic grating and the perception of smooth motion. The results show that color vision is at no great disadvantage in the identification of direction of movement, since this can be done at color contrasts quite close to detection threshold over a wide range of spatial and temporal frequencies. However, we find that subjects can identify direction without having the genuine perception of smooth motion. Smooth motion perception is revealed to be highly impaired since it is detected only at very high color contrasts and over a narrow range of spatial temporal conditions.
K T Mullen; J C Boulton
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Vision research     Volume:  32     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1992 Mar 
Date Detail:
Created Date:  1992-07-16     Completed Date:  1992-07-16     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  483-8     Citation Subset:  IM; S    
McGill Vision Research Center, Department of Ophthalmology, McGill University, Montreal, Canada.
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MeSH Terms
Color Perception / physiology*
Contrast Sensitivity / physiology
Discrimination (Psychology) / physiology
Motion Perception / physiology*
Sensory Thresholds / physiology

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