Perception, action, and Roelofs effect: a mere illusion of dissociation.

ABSTRACT: A prominent and influential hypothesis of vision suggests the existence of two separate visual systems within the brain, one creating our perception of the world and another guiding our actions within it. The induced Roelofs effect has been described as providing strong evidence for this perception/action dissociation: When a small visual target is surrounded by a large frame positioned so that the frame's center is offset from the observer's midline, the perceived location of the target is shifted in the direction opposite the frame's offset. In spite of this perceptual mislocalization, however, the observer can accurately guide movements to the target location. Thus, perception is prone to the illusion while actions seem immune. Here we demonstrate that the Roelofs illusion is caused by

SUBMITTER: Dassonville P 

PROVIDER: S-EPMC524248 | biostudies-literature | 2004 Nov

REPOSITORIES: biostudies-literature