Color Adaptation of the Human Eye

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Abstract
Expts. were made upon adaptation to certain wave lengths of red, green, and blue, at high and low saturation and intensities. The apparatus consisted of 2 colorimeters which made possible the presentation of a stimulus to 2 corresponding points on the retinas and the matching of the perception at any point in the course of adaptation. The subjects observed both fields with both eyes, the 2 fields falling on corresponding points on the retina. Both retinal areas were para-foveal. The course of color adaptation consists of a gradual but never complete loss of saturation with no change of hue and an increase in intensity. The rate and degree of desaturation depend upon the hue, the relative intensity, and relative saturation of the stimulus. The rise in intensity was found to be dependent upon the saturation and intensity of the stimulus and independent of the hue.

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