Document Detail

Influence of luminance flicker and purity on heterochromatic brightness matching and hue discrimination: a postreceptoral opponent process.
MedLine Citation:
PMID:  9156216     Owner:  NLM     Status:  MEDLINE    
We have studied psychophysically the characteristics of the postreceptoral stage of visual processing, using heterochromatic brightness matching (HBM) between 540 and 600 nm, and hue discrimination between 565 and 585 nm, under differing luminance flicker (0-30 Hz) and excitation purity (1.0-0.1) conditions. The HBM curves exhibit deeper minima around 575 nm with decreasing purity. The minimum is generally most pronounced with a 3 Hz flicker and least pronounced with a 30 Hz flicker. Hue discrimination ability is relatively insensitive to flicker and deteriorates at the lower purities. The HBM results for low purities can be explained by the upper envelope of activities in PC- and MC-pathways.
A Kurtenbach; L Rüttiger; P K Kaiser; E Zrenner
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Vision research     Volume:  37     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1997 Mar 
Date Detail:
Created Date:  1997-06-26     Completed Date:  1997-06-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  721-8     Citation Subset:  IM    
Department of Pathophysiology of Vision and Neuro-ophthalmology, University Eye Hospital, Tübingen, Germany.
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MeSH Terms
Color Perception / physiology*
Discrimination (Psychology)
Time Factors
Vision, Monocular / physiology
Visual Pathways

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

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