A large number of studies, using a wide variety of experimental techniques, have
investigated the “higher-order” color mechanisms proposed by Krauskopf and colleagues in …

1.1. Three functions of color vision. Setting aside the complex psychological effects of color,
related to esthetics, fashion, and mood, three relatively basic functions of color vision, which …

By the end of the nineteenth century two major ideas about the nature of color vision were
well established. Light is absorbed by three receptors with differing spectral responses, and …

Evidence supporting the existence of higher order color mechanisms, that is, ones beyond
the previously identified second stage mechanisms is presented. This evidence includes a …

The aim of this chapter is to introduce some of the fundamental measures used in colour
vision research, and to discuss some of the limits of colour vision. The questions which will …

It has previously been reported that, for some choices of the fixed spatial and temporal
characteristics of test stimuli, it was possible to estimate the spectral sensitivities of chromatic …

The first stage of color vision is now well understood (see Chap. 10). When presented in the
same context under photopic conditions, pairs of lights that produce the same excitations in …

The notion is gaining currency that observers who are distributed normally with respect to
commonly measured indices of color vision, may be bimodally distributed with respect to the …

Observers with normal color vision vary widely in their judgments of color appearance, such
as the specific spectral stimuli they perceive as pure or unique hues. We examined the basis …

This study addresses a fundamental question concerning the number of cortical, ie, higher
order mechanisms in color vision. The initial subcortical stages in color vision can be …