Color-specific depth mechanisms revealed by a color-contingent depth aftereffect

Models of stereoscopic depth perception for both natural and random-dot ima ges have focused mainly on the matching of achromatic features of binocular images. Recently, a growing body of research has investigated whether chro matic features can also contribute to the construction of stereoscopic dept h. Here we present experiments yielding color-contingent depth aftereffects comparable in magnitude to those measured after adaptation to achromatic s timuli as evidence of neural mechanisms tuned to both color and depth. Furt her-more, we report that the locus of the combined processing of color and depth is likely to lie beyond the site of binocular matching. (C) 1999 Publ ished by Elsevier Science Ltd. All rights reserved.