Document Detail


Stereopsis at isoluminance in the absence of chromatic aberrations.
MedLine Citation:
PMID:  1607989     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Stereo (front-back) discrimination thresholds were measured in a two-interval forced-choice paradigm for chromatic (red-green) random-dot stereograms that had all detectable longitudinal and transverse aberrations removed by low-pass filtering. The thresholds were measured as a function of the luminance ratio of the red and the green stereo elements. Although individual differences were apparent, three subjects were able to fuse all the stimuli, including those at isoluminance. A quantitative, ideal-observer analysis was used to determine the neural efficiency with which color and luminance information was used in this stereo task. For two subjects, efficiency was constant as a function of the red-to-green ratio; for the third subject, efficiency was less near isoluminance.
Authors:
L V Scharff; W S Geisler
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics and image science     Volume:  9     ISSN:  0740-3232     ISO Abbreviation:  J Opt Soc Am A     Publication Date:  1992 Jun 
Date Detail:
Created Date:  1992-07-21     Completed Date:  1992-07-21     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8402086     Medline TA:  J Opt Soc Am A     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  868-76     Citation Subset:  IM; S    
Affiliation:
Department of Psychology, University of Texas, Austin 78712.
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MeSH Terms
Descriptor/Qualifier:
Color Perception / physiology*
Contrast Sensitivity / physiology
Depth Perception / physiology*
Humans
Light
Mathematics
Photoreceptor Cells / physiology
Sensory Thresholds

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


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