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Subjective appearance of ambiguous structure-from-motion can be driven by objective switches of a separate less ambiguous context

Freeman, ED; Driver, J; (2006) Subjective appearance of ambiguous structure-from-motion can be driven by objective switches of a separate less ambiguous context. VISION RES , 46 (23) 4007 - 4023. 10.1016/j.visres.2006.07.008.

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Abstract

Two ambiguous transparent structure-from-motion (SFM) stimuli often appear to co-rotate. Grossmann & Dobbins (2003) reported breakdown of such perceptual coupling when one stimulus was made unambiguous (by rendering it opaque), leading them to propose that coupling depends generally on differential stimulus ambiguity. In contrast, we demonstrate robust stimulus-driven coupling even when one SFM stimulus is relatively disambiguated, by using relative-luminance and/or binocular-disparity cues. Such context stimuli could induce stimulus-driven coupling by disambiguating the transparent stimulus, though critically only when the context was clearly non-opaque and coaxial with the ambiguous stimulus. This demonstrates long-range information-sharing between separate stimulus representations, subject to specific constraints. (c) 2006 Elsevier Ltd. All rights reserved.

Type:Article
Title:Subjective appearance of ambiguous structure-from-motion can be driven by objective switches of a separate less ambiguous context
DOI:10.1016/j.visres.2006.07.008
Keywords:structure-from-motion, kinetic depth effect, contextual integration, ambiguity, multistability, human vision, perceptual grouping, FEATURE-BASED ATTENTION, VISUAL-CORTEX, SURFACE PERCEPTION, TRANSPARENT MOTION, FIGURES, DEPTH, AREA
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Brain Sciences > Psychology and Language Sciences (Division of) > Institute of Cognitive Neuroscience
UCL > School of Life and Medical Sciences > Faculty of Life Sciences

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