Amodal completion with background determines depth from monocular gap stereopsis

Grove, Philip M., Sachtler, W.L. Ben and Gillam, Barbara J. (2006) Amodal completion with background determines depth from monocular gap stereopsis. Vision Research, 46 22: 3771-3774. doi:10.1016/j.visres.2006.06.020

Author Grove, Philip M.
Sachtler, W.L. Ben
Gillam, Barbara J.
Title Amodal completion with background determines depth from monocular gap stereopsis
Journal name Vision Research   Check publisher's open access policy
ISSN 0042-6989
Publication date 2006-10
Sub-type Article (original research)
DOI 10.1016/j.visres.2006.06.020
Volume 46
Issue 22
Start page 3771
End page 3774
Total pages 4
Editor D.M. Levi
Place of publication Oxford
Publisher Pergamon-Elsevier Science Ltd
Collection year 2006
Language eng
Subject C1
780108 Behavioural and cognitive sciences
170112 Sensory Processes, Perception and Performance
Abstract Grove, Gillam, and Ono [Grove, P. M., Gillam, B. J., & Ono, H. (2002). Content and context. of monocular regions determine perceived depth in random dot, unpaired background and phantom stereograms. Vision Research, 42, 1859-1870] reported that perceived depth in monocular gap stereograms [Gillam, B. J., Blackburn, S., & Nakayama, K. (1999). Stereopsis based on monocular gaps: Metrical encoding of depth and slant without matching contours. Vision Research, 39, 493-502] was attenuated when the color/texture in the monocular gap did not match the background. It appears that continuation of the gap with the background constitutes an important component of the stimulus conditions that allow a monocular gap in an otherwise binocular surface to be responded to as a depth step. In this report we tested this view using the conventional monocular gap stimulus of two identical grey rectangles separated by a gap in one eye but abutting to form a solid grey rectangle in the other. We compared depth seen at the gap for this stimulus with stimuli that were identical except for two additional small black squares placed at the ends of the gap. If the squares were placed stereoscopically behind the rectangle/gap configuration (appearing on the background) they interfered with the perceived depth at the gap. However when they were placed in front of the configuration this attenuation disappeared. The gap and the background were able under these conditions to complete amodally. (c) 2006 Elsevier Ltd. All rights reserved.
Keyword Neurosciences
Monocular Zone
Monocular Gap Stereopsis
Amodal Completion
Da Vinci Stereopsis
Unpaired Regions
Binocular Vision
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 08:24:27 EST