Abstract
The blind fundamentals and alychnes of nine deuteranopic observers have been determined. With their help, the spectral tristimulus function (λ), g(λ), r (λ), based on the CIE 1931 Standard Colorimetric Observer were reduced to the spectral distimulus functions k(λ), w(λ) and the spectral luminosity function l (λ). The interpersonal scatter of the deuteranopic fundamentals was tested by means of the Kruskal and Wallis H test; the result was in accordance with Alpern’s cluster hypothesis for visual cone pigments, in particular erythrolabe.
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