Document Detail

Color appearance in the peripheral retina: effects of stimulus size.
MedLine Citation:
PMID:  2007915     Owner:  NLM     Status:  MEDLINE    
Hue and saturation scaling were used to measure the appearance of spectral lights as a function of stimulus size for nine loci across the horizontal retinal meridian. At a given locus, each hue (R, Y, G, and B) grew as a function of stimulus size up to some asymptotic value. The parameter values of Michaelis-Menten growth functions fitted to the hue data were used to derive the sizes of the so-called perceptive fields of the hue mechanisms. The fields for all mechanisms increased with eccentricity, and this increase was greater on the temporal than on the nasal retina. By increasing stimulus size it was possible to achieve fovealike color vision to eccentricities of 20 deg. However, even the largest stimuli failed to produce fully saturated hues at 40 deg. The retinal size scales of the four hue mechanisms were not the same; those for R and B were similar, and these mechanisms had the smallest perceptive fields everywhere. The perceptive fields of the hue mechanisms at all loci were larger than anatomical estimates of the sizes of retinal receptive fields.
I Abramov; J Gordon; H Chan
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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 and image science     Volume:  8     ISSN:  0740-3232     ISO Abbreviation:  J Opt Soc Am A     Publication Date:  1991 Feb 
Date Detail:
Created Date:  1991-04-26     Completed Date:  1991-04-26     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8402086     Medline TA:  J Opt Soc Am A     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  404-14     Citation Subset:  IM    
Department of Psychology, Brooklyn College, City University of New York 11210.
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MeSH Terms
Color Perception / physiology*
Generalization, Stimulus*
Middle Aged
Retina / physiology*
Visual Fields
Grant Support

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

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