The effect of feature saliency on haptic subitizing
Identifieur interne : 003501 ( Main/Exploration ); précédent : 003500; suivant : 003502The effect of feature saliency on haptic subitizing
Auteurs : Myrthe A. Plaisier [Pays-Bas] ; Martijn Van Woud [Pays-Bas] ; Astrid M. L. Kappers [Pays-Bas]Source :
- Experimental Brain Research. Experimentelle Hirnforschung. Experimentation Cerebrale [ 0014-4819 ] ; 2010.
English descriptors
- KwdEn :
- Hand (physiology), Hand Strength (physiology), Humans, Judgment (physiology), Mathematics (methods), Mechanoreceptors (physiology), Neuropsychological Tests (standards), Pattern Recognition, Visual (physiology), Physical Stimulation (methods), Reaction Time (physiology), Task Performance and Analysis, Touch (physiology), Touch Perception (physiology), Young Adult.
- MESH :
- methods : Mathematics, Physical Stimulation.
- physiology : Hand, Hand Strength, Judgment, Mechanoreceptors, Pattern Recognition, Visual, Reaction Time, Touch, Touch Perception.
- standards : Neuropsychological Tests.
- Humans, Task Performance and Analysis, Young Adult.
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.
Url:
DOI: 10.1007/s00221-010-2517-7
PubMed: 21188361
PubMed Central: 3035780
Affiliations:
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Le document en format XML
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L." last="Kappers">Astrid M. L. Kappers</name><affiliation wicri:level="1"><nlm:aff id="Aff1">Helmholtz Institute, Universiteit Utrecht, Padualaan 8, 3584 CH Utrecht, The Netherlands</nlm:aff><country xml:lang="fr">Pays-Bas</country><wicri:regionArea>Helmholtz Institute, Universiteit Utrecht, Padualaan 8, 3584 CH Utrecht</wicri:regionArea><wicri:noRegion>3584 CH Utrecht</wicri:noRegion></affiliation></author></analytic><series><title level="j">Experimental Brain Research. Experimentelle Hirnforschung. 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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.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Akin, O" uniqKey="Akin O">O Akin</name></author><author><name sortKey="Chase, W" uniqKey="Chase W">W Chase</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Atkinson, J" uniqKey="Atkinson J">J Atkinson</name></author><author><name sortKey="Campbell, Fw" uniqKey="Campbell F">FW Campbell</name></author><author><name sortKey="Francis, Mr" uniqKey="Francis M">MR Francis</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Coren, S" uniqKey="Coren S">S Coren</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Cowan, N" uniqKey="Cowan N">N Cowan</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kaufman, E" uniqKey="Kaufman E">E Kaufman</name></author><author><name sortKey="Lord, M" uniqKey="Lord M">M 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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="Plaisier, Myrthe A" sort="Plaisier, Myrthe A" uniqKey="Plaisier M" first="Myrthe A." last="Plaisier">Myrthe A. Plaisier</name><name sortKey="Woud, Martijn Van" sort="Woud, Martijn Van" uniqKey="Woud M" first="Martijn Van" last="Woud">Martijn Van Woud</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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