Motion in depth based on inter-ocular velocity differences

Two different binocular cues are known for detecting motion in depth. One i s disparity change in time and the other is inter-ocular velocity differenc e. In contrast to the well known fact of the use of the disparity cues, no evidence of contribution of inter-ocular velocity differences for detecting motion in depth has been reported. We demonstrate that motion in depth can be seen based solely on inter-ocular velocity differences using binocularl y uncorrelated random-dot kinematograms. This indicates that the visual sys tem uses monocular velocity signals for processing motion in depth in addit ion to disparity change in time. (C) 2000 Elsevier Science Ltd. All rights reserved.