Document Detail

Analysis of Rayleigh match data with psychometric functions.
MedLine Citation:
PMID:  8350163     Owner:  NLM     Status:  MEDLINE    
Color matches have been used for a variety of purposes, yet the psychometric properties of color-matching data have not been thoroughly investigated. A method is given for generating psychometric functions for the two ends of the color-matching range by use of a perceptual dimension for stimulus magnitude based on ratios of cone quantal catches. The analysis was applied to Rayleigh match data gathered from 250 naïve observers with an automated protocol. Slopes of the psychometric functions were significantly shallower for anomalous trichromats than for normal trichromats, consistent with the assumption that stimulus magnitude is based on ratios of cone quantal catches. These results indicate that the tester's criterion for response consistency can strongly affect Rayleigh match widths. The analysis may also be useful for other perceptual tasks, such as contrast matching and spatial alignment.
W H Swanson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of the Optical Society of America. A, Optics, image science, and vision     Volume:  10     ISSN:  1084-7529     ISO Abbreviation:  J Opt Soc Am A Opt Image Sci Vis     Publication Date:  1993 Aug 
Date Detail:
Created Date:  1993-09-16     Completed Date:  1993-09-16     Revised Date:  2014-09-15    
Medline Journal Info:
Nlm Unique ID:  9800943     Medline TA:  J Opt Soc Am A Opt Image Sci Vis     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1807-17     Citation Subset:  IM    
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MeSH Terms
Child, Preschool
Color Perception / physiology*
Color Perception Tests
Color Vision Defects / physiopathology*
Middle Aged
Grant Support
EY07716/EY/NEI NIH HHS; R01 EY007716/EY/NEI NIH HHS; R01 EY007716-09/EY/NEI NIH HHS

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