Integration of disparity and velocity information for haptic and perceptual judgments of object depth.
Identifieur interne : 002B60 ( Main/Merge ); précédent : 002B59; suivant : 002B61Integration of disparity and velocity information for haptic and perceptual judgments of object depth.
Auteurs : Rachel Foster [États-Unis] ; Carlo Fantoni ; Corrado Caudek ; Fulvio DominiSource :
- Acta psychologica [ 1873-6297 ] ; 2011.
English descriptors
- KwdEn :
- MESH :
Abstract
Do reach-to-grasp (prehension) movements require a metric representation of three-dimensional (3D) layouts and objects? We propose a model relying only on direct sensory information to account for the planning and execution of prehension movements in the absence of haptic feedback and when the hand is not visible. In the present investigation, we isolate relative motion and binocular disparity information from other depth cues and we study their efficacy for reach-to-grasp movements and visual judgments. We show that (i) the amplitude of the grasp increases when relative motion is added to binocular disparity information, even if depth from disparity information is already veridical, and (ii) similar distortions of derived depth are found for haptic tasks and perceptual judgments. With a quantitative test, we demonstrate that our results are consistent with the Intrinsic Constraint model and do not require 3D metric inferences (Domini, Caudek, & Tassinari, 2006). By contrast, the linear cue integration model (Landy, Maloney, Johnston, & Young, 1995) cannot explain the present results, even if the flatness cues are taken into account.
DOI: 10.1016/j.actpsy.2010.12.003
PubMed: 21237442
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pubmed:21237442Le document en format XML
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<author><name sortKey="Foster, Rachel" sort="Foster, Rachel" uniqKey="Foster R" first="Rachel" last="Foster">Rachel Foster</name>
<affiliation wicri:level="2"><nlm:affiliation>Department of Cognitive and Linguistic Sciences, Brown University, Providence, RI, USA. rachel.mary.foster@gmail.com</nlm:affiliation>
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<author><name sortKey="Fantoni, Carlo" sort="Fantoni, Carlo" uniqKey="Fantoni C" first="Carlo" last="Fantoni">Carlo Fantoni</name>
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<series><title level="j">Acta psychologica</title>
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<term>Models, Psychological</term>
<term>Motion Perception (physiology)</term>
<term>Orientation (physiology)</term>
<term>Photic Stimulation</term>
<term>Psychomotor Performance (physiology)</term>
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<term>Orientation</term>
<term>Psychomotor Performance</term>
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<term>Cues</term>
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<front><div type="abstract" xml:lang="en">Do reach-to-grasp (prehension) movements require a metric representation of three-dimensional (3D) layouts and objects? We propose a model relying only on direct sensory information to account for the planning and execution of prehension movements in the absence of haptic feedback and when the hand is not visible. In the present investigation, we isolate relative motion and binocular disparity information from other depth cues and we study their efficacy for reach-to-grasp movements and visual judgments. We show that (i) the amplitude of the grasp increases when relative motion is added to binocular disparity information, even if depth from disparity information is already veridical, and (ii) similar distortions of derived depth are found for haptic tasks and perceptual judgments. With a quantitative test, we demonstrate that our results are consistent with the Intrinsic Constraint model and do not require 3D metric inferences (Domini, Caudek, & Tassinari, 2006). By contrast, the linear cue integration model (Landy, Maloney, Johnston, & Young, 1995) cannot explain the present results, even if the flatness cues are taken into account.</div>
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