Color and edge sensitive channels converge on stereo-depth analyzers

Abstract

Summary The results confirm the conclusion, drawn from studies of the orientation-contingent color AE (McCollough effect), that information about combined color and edge orientation is initially processed separately in monocular channels. It does, however, converge on binocular channels, at least at the level of processing for stereoscopic depth. Other investigators have been unable to demonstrate a depth-specific color AE after binocular adaptation to red and green gratings producing different stereoscopic depths, which fspresumably should adapt color selective binocular channels if they exist (Brown, Stromeyer and Dawson. 1974). These findings suggest that the binocular channels themselves are not selective for color, even though they receive information from monocular channels which are color selective. Taken together, present knowledge drawn from psychophysical research implies that the linkage between color and edge orientation processors occurs prior to and not in binocular channels.