The effect of feature saliency on haptic subitizing
Identifieur interne : 000513 ( PascalFrancis/Corpus ); précédent : 000512; suivant : 000514The effect of feature saliency on haptic subitizing
Auteurs : Myrthe A. Plaisier ; Martijn Van'T Woud ; Astrid M. L. KappersSource :
- Experimental brain research [ 0014-4819 ] ; 2011.
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- Pascal (Inist)
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.
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NO : | PASCAL 11-0121090 INIST |
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ET : | The effect of feature saliency on haptic subitizing |
AU : | PLAISIER (Myrthe A.); VAN'T WOUD (Martijn); KAPPERS (Astrid M. L.) |
AF : | Helmholtz Institute, Universiteit Utrecht, Padualaan 8/3584 CH Utrecht/Pays-Bas (1 aut., 2 aut., 3 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Experimental brain research; ISSN 0014-4819; Coden EXBRAP; Allemagne; Da. 2011; Vol. 209; No. 1; Pp. 29-34; Bibl. 1/2 p. |
LA : | Anglais |
EA : | '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. |
CC : | 002A25E; 002A25D04 |
FD : | Distracteur; Préhension; Main; Homme; Perception haptique |
ED : | Distractor; Gripping; Hand; Human; Haptic perception |
SD : | Distractor; Prension; Mano; Hombre |
LO : | INIST-12535.354000194397860040 |
ID : | 11-0121090 |
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Pascal:11-0121090Le document en format XML
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<ET>The effect of feature saliency on haptic subitizing</ET>
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