title: Perceptual completion in a dynamic scene: an investigation with an ambiguous motion paradigm.
abstract: In this study we employed the streaming-bouncing stimulus to investigate aspects of dynamic occlusion, e.g., of objects that temporarily move under occlusion while covertly being tracked. Two occluders, both either luminance-defined or invisible (virtual), were placed on the trajectories of the moving objects in the streaming-bouncing stimulus. We found that the bouncing percept was dominant when the objects moved under luminance-defined occluders but not when they moved under virtual occluders. Perceived motion direction thus varied with occluder visibility. The results seem to suggest that perceptual completion of a moving object interferes with constant motion processing of the same object.
authors.affiliation: Kyushu University, Faculty of Design, Department of Visual Communication Design, 4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan. gb_remijn@yahoo.co.jp
authors.forename: Gerard B
authors.initials: GB
authors.lastname: Remijn
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ito
mesh_terms: D000328:Adult; D015350:Contrast Sensitivity / Q000502:physiology; D003463:Cues; D005260:Female; D006801:Humans; D008297:Male; D009038:Motion; D009039:Motion Perception / Q000502:physiology*; D010470:Perceptual Masking / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics