The effect of feature saliency on haptic subitizing
Identifieur interne : 003288 ( Main/Exploration ); précédent : 003287; suivant : 003289The effect of feature saliency on haptic subitizing
Auteurs : Myrthe A. Plaisier [Pays-Bas] ; Martijn Van'T Woud [Pays-Bas] ; Astrid M. L. Kappers [Pays-Bas]Source :
- Experimental brain research [ 0014-4819 ] ; 2011.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
- KwdEn :
Abstract
'Subitizing' refers to fast and error-free numerosity judgment for small (<4) sets of items. For larger sets, the slower process of 'counting' is used. Counting has a serial character, whereas subitizing is believed to have a parallel character. While subitizing was initially found in vision, it has been shown to exist in touch as well. In vision, it has been demonstrated that adding distractor items to a set of target items influences numerosity judgment of the target items. Subitizing was in this case only possible if the distractor item is highly salient among the targets. In the present study, we investigated the effect of adding a distractor item on haptic judgement of a set of target items. To this end, we asked subjects to judge the number of spheres grasped in their hand. Either a cube or an ellipsoid could be added to the set. A cube among spheres has been shown to be highly salient, while an ellipsoid among spheres is not. Our results show that adding a distractor item led to an increase in the response time slopes regardless of the distractor shape. Subitizing was, however, only possible in the case of a salient distractor. This is in agreement with results from vision.
Affiliations:
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Plaisier</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Helmholtz Institute, Universiteit Utrecht, Padualaan 8</s1><s2>3584 CH Utrecht</s2><s3>NLD</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Pays-Bas</country><wicri:noRegion>3584 CH Utrecht</wicri:noRegion></affiliation></author><author><name sortKey="Van T Woud, Martijn" sort="Van T Woud, Martijn" uniqKey="Van T Woud M" first="Martijn" last="Van'T Woud">Martijn Van'T Woud</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Helmholtz Institute, Universiteit Utrecht, Padualaan 8</s1><s2>3584 CH Utrecht</s2><s3>NLD</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Pays-Bas</country><wicri:noRegion>3584 CH Utrecht</wicri:noRegion></affiliation></author><author><name sortKey="Kappers, Astrid M L" sort="Kappers, Astrid M L" uniqKey="Kappers A" first="Astrid M. L." last="Kappers">Astrid M. L. Kappers</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Helmholtz Institute, Universiteit Utrecht, Padualaan 8</s1><s2>3584 CH Utrecht</s2><s3>NLD</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Pays-Bas</country><wicri:noRegion>3584 CH Utrecht</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="2011">2011</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>Distractor</term><term>Gripping</term><term>Hand</term><term>Haptic perception</term><term>Human</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Distracteur</term><term>Préhension</term><term>Main</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">'Subitizing' refers to fast and error-free numerosity judgment for small (<4) sets of items. For larger sets, the slower process of 'counting' is used. Counting has a serial character, whereas subitizing is believed to have a parallel character. While subitizing was initially found in vision, it has been shown to exist in touch as well. In vision, it has been demonstrated that adding distractor items to a set of target items influences numerosity judgment of the target items. Subitizing was in this case only possible if the distractor item is highly salient among the targets. In the present study, we investigated the effect of adding a distractor item on haptic judgement of a set of target items. To this end, we asked subjects to judge the number of spheres grasped in their hand. Either a cube or an ellipsoid could be added to the set. A cube among spheres has been shown to be highly salient, while an ellipsoid among spheres is not. Our results show that adding a distractor item led to an increase in the response time slopes regardless of the distractor shape. Subitizing was, however, only possible in the case of a salient distractor. This is in agreement with results from vision.</div></front></TEI><affiliations><list><country><li>Pays-Bas</li></country></list><tree><country name="Pays-Bas"><noRegion><name sortKey="Plaisier, Myrthe A" sort="Plaisier, Myrthe A" uniqKey="Plaisier M" first="Myrthe A." last="Plaisier">Myrthe A. Plaisier</name></noRegion><name sortKey="Kappers, Astrid M L" sort="Kappers, Astrid M L" uniqKey="Kappers A" first="Astrid M. L." last="Kappers">Astrid M. L. Kappers</name><name sortKey="Van T Woud, Martijn" sort="Van T Woud, Martijn" uniqKey="Van T Woud M" first="Martijn" last="Van'T Woud">Martijn Van'T Woud</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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