Document Detail

The ellipsoidal representation of spectral sensitivity.
MedLine Citation:
PMID:  2339517     Owner:  NLM     Status:  MEDLINE    
When plotted in three-dimensional color-space, thresholds of colored lights fall on or near the surface of an ellipsoid. Using data reported in the literature, we estimate the deviation between sets of spectral threshold measurements and the ellipsoid that passes closest to the data. Seventy-three percent of the reported spectral thresholds fall within 0.1 log units of the best-fitting ellipsoid. Our ability to distinguish one ellipsoidal fit as significantly better than another is limited by the choice of sampling directions in color-space. Spectral lights do not provide a good set of sampling directions for reducing the uncertainty about the estimated best-fitting ellipsoid. Complete characterization of visual sensitivity requires measuring thresholds to mixtures of spectral lights.
A B Poirson; B A Wandell
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Vision research     Volume:  30     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1990  
Date Detail:
Created Date:  1990-06-21     Completed Date:  1990-06-21     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  647-52     Citation Subset:  IM    
Psychology Department, Stanford University, CA 94305.
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MeSH Terms
Color Perception / physiology*
Discrimination (Psychology) / physiology
Models, Neurological
Sensory Thresholds / physiology
Grant Support
2 R01 EY03164/EY/NEI NIH HHS

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