抄録
Roles of subjective occluding surfaces and transparency by the neon effect in the formation of amodal representation of partly-occluded objects were examined in terms of their effects on the solution to the correspondence problem in apparent motion. One of the following horizontally-elongated surfaces was located between the top and the bottom motion targets in the bistable motion display: a textured rectangle (real surface), an opaque illusory surface, or a transparent illusory surface induced by the neon brightness effect. The binocular disparity of the surface was varied. Proportion of transversal motion perception increased when a real or an opaque illusory surface carried a crossed disparity, but not when a transparent illusory surface was used. The results suggest that the formation of amodal representation occurs in the real or the illusory surface cases but not in the transparent surface case, resulting in the difference in affinity between the top and the bottom motion targets in the bistable motion display. Effects of nonlocal information about surfaces on the formation of amodal representation and nonhierachical organization of surface representation have been demonstrated.
