| Abstract: | If subjects adapt to an unambiguous version of a Necker cube, a subsequent ambiguous cube tends to be seen in the opposing perspective. The present experiment shows that this adaptation effect depends on whether the adapting cube is attended. During the adaptation phase, 12 Ss saw 2 superimposed cubes of opposite perspective and different sizes and colors centered on fixation. Ss detected color changes in line segments that defined either the small or large cube. The perception of the subsequent ambiguous cube depended on which of the adapting cubes was task relevant. This attentional effect showed a strong asymmetry. When Ss attended to the small adapting cube, an aftereffect appropriate to the perspective of the cube was found, but when the large adapting cube was attended, no aftereffect was present. This asymmetry may relate to constraints on the spatial distribution of attention. (French abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
