Abstract

If a temporal stimulus is presented through the cones, the threshold for a rod stimulus may be influenced even if the cone stimulus remains subthreshold. We have used sinusoidal stimulation to study the process underlying this rod-cone interaction. A first-order model is proposed consisting of a single threshold mechanism preceded by linear summation of rod and cone signals with a pure latency difference. Two deviations from this model are described. First, occasional additivity failures appear; second, if the phase difference characteristic is corrected for latency, the remaining part cannot be explained in terms of the de Lange curves of the rod and cone systems.

© 1977 Optical Society of America

Mesopic rod and S-cone interactions revealed by modulation thresholds

Andrew J. Zele, Jan Kremers, and Beatrix Feigl
J. Opt. Soc. Am. A 29(2) A19-A26 (2012)

Chromatic rod–cone interaction during dark adaptation

Bjørn Stabell and Ulf Stabell
J. Opt. Soc. Am. A 15(11) 2809-2815 (1998)

Scotopic luminosity function and color-mixture data

Homer B. Tilton
J. Opt. Soc. Am. 67(11) 1494-1501 (1977)

Extrinsic cone-mediated post-receptoral noise inhibits the rod temporal impulse response function

Amithavikram R. Hathibelagal, Beatrix Feigl, Dingcai Cao, and Andrew J. Zele
J. Opt. Soc. Am. A 35(4) B72-B77 (2018)

Two-band model of heterochromatic flicker

D. H. Kelly and D. van Norren
J. Opt. Soc. Am. 67(8) 1081-1091 (1977)