Binocular Perception of 2D Lateral Motion and Guidance of Coordinated Motor Behavior. (April 2016)

• Record Type: Journal Article
• Authors: Fath, Aaron J.; Snapp-Childs, Winona; Kountouriotis, Georgios K.; Bingham, Geoffrey P.
• Is Part Of: Perception. Volume 45:Number 4(2016)
• Page Start: 466
• Page End: 473
• Publication Date: 2016-04
• Subjects: Coordination -- stereomotion -- binocular vision -- motion perception; Perception -- Periodicals; Perception -- Periodicals; Perception; Periodicals; 153.705
• DOI: 10.1177/0301006615614664
• Languages: English
• ISSNs: 0301-0066

Abstract

Zannoli, Cass, Alais, and Mamassian (2012) found greater audiovisual lag between a tone and disparity-defined stimuli moving laterally (90–170 ms) than for disparity-defined stimuli moving in depth or luminance-defined stimuli moving laterally or in depth (50–60 ms). We tested if this increased lag presents an impediment to visually guided coordination with laterally moving objects. Participants used a joystick to move a virtual object in several constant relative phases with a laterally oscillating stimulus. Both the participant-controlled object and the target object were presented using a disparity-defined display that yielded information through changes in disparity over time (CDOT) or using a luminance-defined display that additionally provided information through monocular motion and interocular velocity differences (IOVD). Performance was comparable for both disparity-defined and luminance-defined displays in all relative phases. This suggests that, despite lag, perception of lateral motion through CDOT is generally sufficient to guide coordinated motor behavior.