Document Detail

Heterochromatic Fusion Nystagmus: its use in estimating chromatic equiluminance in humans and monkeys.
MedLine Citation:
PMID:  1455746     Owner:  NLM     Status:  MEDLINE    
The use of chromatic patterns that are equated for luminance has become increasingly popular in psychophysical and neurophysiological studies of visual processing. The currently available techniques for equating different colors for brightness rely upon human reports of perceptual events that are reduced at some luminance ratio. We report here the results of a study using a technique we have recently developed that produces a vivid and compelling motion percept only at isoluminance. That is, unlike previous methods, this technique relies upon a perceptual event (motion) that actually becomes more salient at isoluminance. We also observed that the optokinesis generated by the moving pattern mirrors the perceptual reports at all luminance ratios. If used in this manner, the technique can provide an estimate of chromatic isoluminance in a variety of species and can be used to corroborate a human subject's perceptual experience.
A Chaudhuri; T D Albright
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  32     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1992 Sep 
Date Detail:
Created Date:  1992-12-31     Completed Date:  1992-12-31     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1745-59     Citation Subset:  IM    
Salk Institute for Biological Studies, San Diego, CA 92186-5800.
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MeSH Terms
Color Perception / physiology*
Color Perception Tests / methods*
Macaca mulatta
Motion Perception / physiology
Nystagmus, Optokinetic / physiology*
Pattern Recognition, Visual / physiology
Time Factors
Grant Support

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