Document Detail


Failure of rivalry at low contrast: evidence of a suprathreshold binocular summation process.
MedLine Citation:
PMID:  1455720     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Presentation of different images to the two eyes normally results in a time-varying alternation between the two images (binocular rivalry). However, we find that when orthogonal gratings are viewed dichoptically at low contrast, a stable summation between the two images is perceived in the form of a dichoptic plaid. The range of perception of the dichoptic plaid depends on spatial frequency, contrast and luminance of the gratings. This phenomenon differs from the "false fusion", a fleeting summation of different images perceived only under very brief presentation of the stimuli. The observations suggest that there exists a neural process that performs a summation of dissimilar images, and that is distinct from the competitive process of suppression and binocular rivalry.
Authors:
L Liu; C W Tyler; C M Schor
Publication Detail:
Type:  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 Aug 
Date Detail:
Created Date:  1993-01-06     Completed Date:  1993-01-06     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1471-9     Citation Subset:  IM    
Affiliation:
University of California, School of Optometry, Berkeley 94720.
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MeSH Terms
Descriptor/Qualifier:
Contrast Sensitivity / physiology*
Humans
Light
Pattern Recognition, Visual / physiology*
Photometry
Sensory Thresholds / physiology
Time Factors
Vision, Binocular / physiology*
Vision, Monocular / physiology
Grant Support
ID/Acronym/Agency:
EY 7890/EY/NEI NIH HHS; EYO 3532/EY/NEI NIH HHS

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


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