Spectral sensitivity of low level electroretinograms

Abstract

A three-way comparison was made of the spectral sensitivity of the human electroretinogram obtained with alternating stimuli, of the spectral sensitivity of responses elicited by flashing stimuli, and of a psychophysical determination of spectral sensitivity. The comparisons were made at low levels of adaptation. Responses to alternating stimuli had a sensitivity which closely matched the psychophysical data and were scotopic, but flashing stimuli elicited electroretinograms with high short wave length sensitivity. The results show that alternating stimuli may be used to obtain scotopic electroretinograms free of complications introduced by stray light.