Abstract

Eight normal and two dichromatic observers are tested for amplitude sensitivity to sinusoidally flickering white light at various photopic adaptation levels. The mean response curve of the color-normal observers is in good agreement with the theoretical model of the visual system proposed in Part II. In addition, certain individual curves show three smaller peaks of sensitivity in the frequency ranges of 4–7, 10–15, and 20–30 cps. Their stability with varying adaptation level indicates that these subpeaks occur in the initial, photoreactive stage of system, according to the proposed model. Thus they may be associated with the linear mechanism of color discrimination. Abnormal amplitude-sensitivity curves obtained with one deuteranope and one protanope lend further weight to this hypothesis.

© 1962 Optical Society of America

Visual Responses to Time-Dependent Stimuli. IV. Effects of Chromatic Adaptation

D. H. Kelly
J. Opt. Soc. Am. 52(8) 940-947 (1962)

Visual Responses to Time-Dependent Stimuli.* I. Amplitude Sensitivity Measurements†

D. H. Kelly
J. Opt. Soc. Am. 51(4) 422-429 (1961)

Visual Responses to Time-Dependent Stimuli.* II. Single-Channel Model of the Photopic Visual System

D. H. Kelly
J. Opt. Soc. Am. 51(7) 747-754 (1961)

Visual Responses to Equally Bright Stimuli of Unequal Luminance

Judith Wheeler Onley and Robert M. Boynton
J. Opt. Soc. Am. 52(8) 934-940 (1962)

Phase Relations in Flicker Fusion

S. M. Luria and H. G. Sperling
J. Opt. Soc. Am. 52(9) 1051-1057 (1962)