Sensitivity of the eye to the saturation of colors.

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Abstract
This experiment was undertaken because it seemed that clues to many of the problems in color vision might lie in a thorough understanding of the nature of saturation and its relation to brightness and hue. The threshold for saturation was measured at 6 different wave lengths. The measurements were made at levels of brightness varying between .01 and 500 mls. "The data indicate that variations from the mode of sensitivity to saturation are the rule rather than the exception. Previous investigators, while often mentioning the possibility of a distribution of sensitivity among a population, have failed usually to recognize that an adequate theory of color vision must provide some means for the inclusion of such variation. It is evident that relative sensitivity to different hues varies from eye to eye. One individual may be supersensitive to green, and less than normally sensitive to yellow . . . These facts do not allow for a qualitative distinction between color blindness and normal vision. In terms of sensitivity, the classification of different 'forms' of color blindness is not likely to be very valuable." The importance of the data for the theory of color vision is discussed. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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