TEXTURE DENSITY AFTEREFFECTS IN THE PERCEPTION OF ARTIFICIAL AND NATURAL TEXTURES

Three experiments are reported concerning the texture density aftereff ect, The experiments address the question of how visual texture densit y information is encoded by examining patterns of transfer between dif ferent textures. In the first two experiments, it is shown that manipu lation of spatial frequency and orientation information does not affec t the direction of the aftereffect of density (reduction in perceived density), though similarity between adaptation and test textures does influence aftereffect strength. The third experiment demonstrates that adaptation to density differences in artificial textures in which spa tial frequency information is held constant produces density aftereffe cts in naturalistic test textures in which density and spatial frequen cy covary. (C) 1997 Elsevier Science Ltd.