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.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
