Two stages of motion adaptation in human visual system

Abstract

In two experiments using positive adaptation sequences followed by reverse negative ones, the presence of two separate movement aftereffects was studied. In Experiment 1 subjects were adapted binocularly, whereas in Experiment 2 monocular adaptation was employed. It was found that the movement aftereffect, like the negative afterimage, displays quite separate adaptation mechanisms—a long-term and a short-term mechanism. This indicates the existence of two distinct mechanisms of adaptation, connected in some way but occurring at different stages of visual adaptation. © 1988, The Psychonomic Soceity, Inc.. All rights reserved.