Force can overcome object geometry in the perception of shape through active touch
Identifieur interne : 007A82 ( Main/Exploration ); précédent : 007A81; suivant : 007A83Force can overcome object geometry in the perception of shape through active touch
Auteurs : Gabriel Robles-De-La-Torre [Canada] ; Vincent Hayward [Canada]Source :
- Nature : (London) [ 0028-0836 ] ; 2001.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
- KwdEn :
- MESH :
Abstract
Haptic (touch) perception normally entails an active exploration of object surfaces over time. This is called active touch1-3. When exploring the shape of an object, we experience both geometrical4 and force cues. For example, when sliding a finger across a surface with a rigid bump on it, the finger moves over the bump while being opposed by a force whose direction and magnitude are related to the slope of the bump5. The steeper the bump, the stronger the resistance. Geometrical and force cues are correlated, but it has been commonly assumed that shape perception relies on object geometry alone. Here we show that regardless of surface geometry, subjects identified and located shape features on the basis of force cues or their correlates. Using paradoxical stimuli, for example combining the force cues of a bump with the geometry of a hole, we found that subjects perceived a bump. Conversely, when combining the force cues of a hole with the geometry of a bump, subjects typically perceived a hole.
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Le document en format XML
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i1="01"><s1>McGill University, Center for Intelligent Machines</s1><s2>Montréal, H3A 2A7</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Montréal, H3A 2A7</wicri:noRegion><orgName type="university">Université McGill</orgName><placeName><settlement type="city">Montréal</settlement><region type="state">Québec</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">01-0446852</idno><date when="2001">2001</date><idno type="stanalyst">PASCAL 01-0446852 INIST</idno><idno type="RBID">Pascal:01-0446852</idno><idno type="wicri:Area/PascalFrancis/Corpus">001356</idno><idno type="wicri:Area/PascalFrancis/Curation">000156</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">001134</idno><idno type="wicri:doubleKey">0028-0836:2001:Robles De La Torre G:force:can:overcome</idno><idno type="wicri:Area/Main/Merge">008111</idno><idno type="wicri:source">PubMed</idno><idno 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i1="01"><s1>McGill University, Center for Intelligent Machines</s1><s2>Montréal, H3A 2A7</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Montréal, H3A 2A7</wicri:noRegion><orgName type="university">Université McGill</orgName><placeName><settlement type="city">Montréal</settlement><region type="state">Québec</region></placeName></affiliation></author><author><name sortKey="Hayward, Vincent" sort="Hayward, Vincent" uniqKey="Hayward V" first="Vincent" last="Hayward">Vincent Hayward</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>McGill University, Center for Intelligent Machines</s1><s2>Montréal, H3A 2A7</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Montréal, H3A 2A7</wicri:noRegion><orgName type="university">Université McGill</orgName><placeName><settlement type="city">Montréal</settlement><region type="state">Québec</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Nature : (London)</title><title level="j" type="abbreviated">Nature : (Lond.)</title><idno type="ISSN">0028-0836</idno><imprint><date when="2001">2001</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Nature : (London)</title><title level="j" type="abbreviated">Nature : (Lond.)</title><idno type="ISSN">0028-0836</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Biomechanics</term><term>Experimental study</term><term>Female</term><term>Finger</term><term>Fingers (physiology)</term><term>Form Perception (physiology)</term><term>Geometrical shape</term><term>Human</term><term>Humans</term><term>Male</term><term>Perception</term><term>Tactile sensitivity</term><term>Testing equipment</term><term>Touch (physiology)</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Fingers</term><term>Form Perception</term><term>Touch</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Female</term><term>Humans</term><term>Male</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Biomécanique</term><term>Doigt</term><term>Perception</term><term>Sensibilité tactile</term><term>Forme géométrique</term><term>Homme</term><term>Etude expérimentale</term><term>Appareillage essai</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Homme</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Haptic (touch) perception normally entails an active exploration of object surfaces over time. This is called active touch<sup>1-3</sup>. When exploring the shape of an object, we experience both geometrical<sup>4</sup> and force cues. For example, when sliding a finger across a surface with a rigid bump on it, the finger moves over the bump while being opposed by a force whose direction and magnitude are related to the slope of the bump<sup>5</sup>. The steeper the bump, the stronger the resistance. Geometrical and force cues are correlated, but it has been commonly assumed that shape perception relies on object geometry alone. Here we show that regardless of surface geometry, subjects identified and located shape features on the basis of force cues or their correlates. Using paradoxical stimuli, for example combining the force cues of a bump with the geometry of a hole, we found that subjects perceived a bump. Conversely, when combining the force cues of a hole with the geometry of a bump, subjects typically perceived a hole.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Québec</li></region><settlement><li>Montréal</li></settlement><orgName><li>Université McGill</li></orgName></list><tree><country name="Canada"><region name="Québec"><name sortKey="Robles De La Torre, Gabriel" sort="Robles De La Torre, Gabriel" uniqKey="Robles De La Torre G" first="Gabriel" last="Robles-De-La-Torre">Gabriel Robles-De-La-Torre</name></region><name sortKey="Hayward, Vincent" sort="Hayward, Vincent" uniqKey="Hayward V" first="Vincent" last="Hayward">Vincent Hayward</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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