The Effect of Binocular Integration on Illusory Motion: Using the Modified Rotating Snake

Two experiments were performed to investigate the impacts of binocular disparity and rivalry on illusory motion. The figure used by Kitaoka(2004) were modified and consisted of five disks. In the experiment 1, the effect of binocular disparity was tested when components of illusory motion figure were placed in a different depth plane. In the experiment 2, the effect of binocular rivalry was tested. The result showed that illusory motion was reduced when the binocular disparity was added. Also, illusory motion was dramatically reduced or vanished when binocular rivalry condition was introduced. These results suggest that the illusory motion was processed prior to the integration of binocular information.