Vector model for normal and dichromatic color vision.

S. L. Guth, R. W. Massof, T. Benzschawel

Research output: Contribution to journalArticlepeer-review


The inclusion of cone mechanisms in a slightly revised version of an earlier model allows accounts of phenomena that involve receptor effects as well as dichromatic color vision. Intensity-dependent parameters that stimulate the adaptation of receptors and opponent and nonopponent mechanisms are varied to predict a wide range of data for both normals and dichromats, including: (i) color matching; (ii) the approximate apparent hue and saturation of the spectrum; (iii) foveal spectral sensitivities obtained by flicker photometry and by detection in the dark and under conditions of achromatic or chromatic adaptation; (iv) heterochromatic additivity failures in the dark-adapted and chromatically adapted eye; (v) approximate differences between brightness and luminance; and, (vi) color and wavelength discrimination under varying adaptation conditions.

Original languageEnglish (US)
Pages (from-to)197-212
Number of pages16
JournalJournal of the Optical Society of America
Issue number2
StatePublished - Feb 1980
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)


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