Abstract

Last year, we presented a analysis which provided a framework for reconciling S-cone detection and discrimination data [1]. A theoretical template which used Boynton & Kambe's [2] definition of S-cone trolands was used to derive a model template relating S-cone detection to S-cone backgrounds. In the past year, we have examined detection and discrimination data collected under various adaptation conditions. These data demonstrate that short and long wavelength backgrounds affect the theoretical template differently. The purpose of this paper is to present these experimental data and extend the analysis. Data collected under diverse conditions all point to the TVR function for the S-cones having more than one gain control mechanism. First we will describe the data set and then the modeling.

© 1991 Optical Society of America