抄録
In this research we investigated postural sway of subjects induced by optical flow composed of random dots on computer graphics which simulated straight orbits and curve orbits. The optical flow was varied with curvature, velocity and how to display. We could conclude that the body sway is mostly induced by a change of curvature and clues of image and that the subject sways to centrifugal direction and bends forward when curvature is varied and that the subject sways to centripetal direction in advance if he recognizes curve orbit.
