A haptic size-contrast illusion affects size perception but not grasping
Identifieur interne : 007532 ( Main/Merge ); précédent : 007531; suivant : 007533A haptic size-contrast illusion affects size perception but not grasping
Auteurs : David A. Westwood [Canada] ; Melvyn A. Goodale [Canada]Source :
- Experimental brain research [ 0014-4819 ] ; 2003.
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- Pascal (Inist)
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- topic : Homme.
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Abstract
Object features (e.g. size, shape and orientation) are relevant for recognition and identification, but also for the control of manual actions. Converging evidence suggests a dissociation between the visual systems that mediate object perception and object-directed action. Here we present evidence suggesting that a similar dissociation might exist in the haptic domain. We demonstrate that a haptic variation of a size-contrast illusion influences the perceived size of a target object, but not the degree to which the hand is opened when that object is the target of a grasping movement. This finding is consistent with the view that object perception is "scene-based" and takes into consideration not only the size of the target object but also the sizes of other nearby objects. In contrast, the control of object-directed action is primarily driven by the absolute size of the target object independent of the relative sizes of other objects in the environment, suggesting a "actor-based" frame of reference. The present findings suggest that dissociations between action and perception are not unique to the visual system, but might instead reflect a general organizational principle of sensory processing.
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Pascal:04-0163519Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">A haptic size-contrast illusion affects size perception but not grasping</title><author><name sortKey="Westwood, David A" sort="Westwood, David A" uniqKey="Westwood D" first="David A." last="Westwood">David A. Westwood</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>School of Health and Human Performance, Dalhousie University, 6230 South Street</s1><s2>Halifax, Nova Scotia, B3H 3J5</s2><s3>CAN</s3><sZ>1 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Halifax, Nova Scotia, B3H 3J5</wicri:noRegion></affiliation></author><author><name sortKey="Goodale, Melvyn A" sort="Goodale, Melvyn A" uniqKey="Goodale M" first="Melvyn A." last="Goodale">Melvyn A. Goodale</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Departments of Psychology and Physiology, The University of Western Ontario</s1><s2>London, Ontario</s2><s3>CAN</s3><sZ>2 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>London, Ontario</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">04-0163519</idno><date when="2003">2003</date><idno type="stanalyst">PASCAL 04-0163519 INIST</idno><idno type="RBID">Pascal:04-0163519</idno><idno type="wicri:Area/PascalFrancis/Corpus">001086</idno><idno type="wicri:Area/PascalFrancis/Curation">000423</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000F00</idno><idno type="wicri:doubleKey">0014-4819:2003:Westwood D:a:haptic:size</idno><idno type="wicri:Area/Main/Merge">007532</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">A haptic size-contrast illusion affects size perception but not grasping</title><author><name sortKey="Westwood, David A" sort="Westwood, David A" uniqKey="Westwood D" first="David A." last="Westwood">David A. Westwood</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>School of Health and Human Performance, Dalhousie University, 6230 South Street</s1><s2>Halifax, Nova Scotia, B3H 3J5</s2><s3>CAN</s3><sZ>1 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Halifax, Nova Scotia, B3H 3J5</wicri:noRegion></affiliation></author><author><name sortKey="Goodale, Melvyn A" sort="Goodale, Melvyn A" uniqKey="Goodale M" first="Melvyn A." last="Goodale">Melvyn A. Goodale</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Departments of Psychology and Physiology, The University of Western Ontario</s1><s2>London, Ontario</s2><s3>CAN</s3><sZ>2 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>London, Ontario</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Experimental brain research</title><title level="j" type="abbreviated">Exp. brain res.</title><idno type="ISSN">0014-4819</idno><imprint><date when="2003">2003</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Experimental brain research</title><title level="j" type="abbreviated">Exp. brain res.</title><idno type="ISSN">0014-4819</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Gripping</term><term>Hand</term><term>Haptic perception</term><term>Human</term><term>Manual task</term><term>Motor control</term><term>Perceptual illusion</term><term>Size</term><term>Vision</term><term>Visual perception</term><term>Visuomotor control</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Préhension</term><term>Tâche manuelle</term><term>Perception visuelle</term><term>Vision</term><term>Main</term><term>Illusion perceptive</term><term>Taille</term><term>Contrôle moteur</term><term>Contrôle visuomoteur</term><term>Homme</term><term>Perception haptique</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Homme</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Object features (e.g. size, shape and orientation) are relevant for recognition and identification, but also for the control of manual actions. Converging evidence suggests a dissociation between the visual systems that mediate object perception and object-directed action. Here we present evidence suggesting that a similar dissociation might exist in the haptic domain. We demonstrate that a haptic variation of a size-contrast illusion influences the perceived size of a target object, but not the degree to which the hand is opened when that object is the target of a grasping movement. This finding is consistent with the view that object perception is "scene-based" and takes into consideration not only the size of the target object but also the sizes of other nearby objects. In contrast, the control of object-directed action is primarily driven by the absolute size of the target object independent of the relative sizes of other objects in the environment, suggesting a "actor-based" frame of reference. The present findings suggest that dissociations between action and perception are not unique to the visual system, but might instead reflect a general organizational principle of sensory processing.</div></front></TEI><affiliations><list><country><li>Canada</li></country></list><tree><country name="Canada"><noRegion><name sortKey="Westwood, David A" sort="Westwood, David A" uniqKey="Westwood D" first="David A." last="Westwood">David A. Westwood</name></noRegion><name sortKey="Goodale, Melvyn A" sort="Goodale, Melvyn A" uniqKey="Goodale M" first="Melvyn A." last="Goodale">Melvyn A. Goodale</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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