Abstract

The effects of three stimulus durations on spectral sensitivity of the electroretinogram were examined under moderate light adaptation. The durations were 11, 42, and 109 msec. At a low criterion amplitude of response, the 11-msec duration showed lower sensitivity in the green and blue regions of the spectrum than the two longer durations. At the red end of the spectrum all curves showed elevated sensitivity of approximately equal amounts. For a moderate criterion amplitude, the curves for the various durations retained their relative positions at the shorter wavelengths. At the red end of the spectrum, sensitivity decreased for all durations, but to a greater amount for the two longer durations. For a high criterion response, the 11-msec duration became more sensitive throughout the spectrum; however, it retained a form similar to that for the two longer durations. The curves were presumed to include at least two components: a scotopic process and a red-sensitive process. Possible interpretations of the duration effects on the spectral curves included the Bunsen–Roscoe law and the summation of on- and off-responses.

© 1962 Optical Society of America

Luminance-Duration Relationships in the Light-Adapted Electroretinogram

William R. Biersdorf
J. Opt. Soc. Am. 48(6) 412-417 (1958)

Level of Light Adaptation and the Human Electroretinogram

William R. Biersdorf and John C. Armington
J. Opt. Soc. Am. 50(1) 78-82 (1960)

Effect of Stimulus Duration on Electrical Responses of the Human Retina

E. Parker Johnson and Neil R. Bartlett
J. Opt. Soc. Am. 46(3) 167-170 (1956)

Effect of Test-Flash Duration upon the Spectral Sensitivity of the Eye*

Mitsuo Ikeda and Robert M. Boynton
J. Opt. Soc. Am. 52(6) 697-699 (1962)

On-Off Interaction in the Human Electroretinogram

C. I. Howarth
J. Opt. Soc. Am. 51(3) 345-352 (1961)