Sine-wave threshold characteristics of human color mechanisms inferred by superimposing red and green stimuli in opposite phases have roughly the same curve shapes as those measured under intense chromatic adaptation, but the latter technique yields considerably greater overall sensitivity for the green mechanism. The adaptive-artifact explanation for this discrepancy offered by Cavonius and Estévez is shown to be untenable.
© 1976 Optical Society of America
D. H. Kelly, "Differences between red and green color-mechanism characteristics: Interaction or artifact?," J. Opt. Soc. Am. 66, 1430-1435 (1976)