Abstract

Spectral sensitivities were measured by a method of constant CFF under adaptation to high-luminance chromatic fields and under dark adaptation. Adaptation to yellow yielded a narrow curve of spectral sensitivity whose maximum was at about 440 nm (similar to Stiles’s π₁) when the CFF was low (18 Hz), but yielded a broader spectral sensitivity, maximum 540–560 nm, when the CFF was high (30 Hz). Adaptation to red and green yielded spectral sensitivities that were similar in shape to those of π₄ and π₅, respectively. Measurements obtained under dark adaptation at CFF’s of 25 and 30 Hz were consistent with the hypothesis that flicker is detected by whichever component (e.g., π₄ or π₅) is the more sensitive; spectral sensitivity corresponded to the outer envelope of the two components. When the CFF was 40 Hz, dark-adapted spectral sensitivity was narrower in shape than either π₄ or π₅. These measurements at high CFF are reasonably consistent with the hypothesis that flicker is detected when the thresholds of both components are surpassed; spectral sensitivity corresponded to the inner envelope of the two components.

© 1973 Optical Society of America

Luminosity and CFF in Deuteranopes and Protanopes*

Joel Pokorny and Vivianne C. Smith
J. Opt. Soc. Am. 62(1) 111-117 (1972)

Chromatic adaptation alters spectral sensitivity at high temporal frequencies

William H. Swanson
J. Opt. Soc. Am. A 10(6) 1294-1303 (1993)

Photopic spectral sensitivity of the peripheral retina*†

Bill R. Wooten, Kenneth Fuld, and Lothar Spillmann
J. Opt. Soc. Am. 65(3) 334-342 (1975)

Heterochromatic additivity, foveal spectral sensitivity, and a new color model*

Sherman L. Guth and Howard R. Lodge
J. Opt. Soc. Am. 63(4) 450-462 (1973)

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

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