HapticV1, PascalFrancis, Corpus, bibRecord, 000B79

Curvature discrimination in various finger conditions

Identifieur interne : 000B79 ( PascalFrancis/Corpus ); précédent : 000B78; suivant : 000B80

Curvature discrimination in various finger conditions

Auteurs : Bernard J. Van Der Horst ; Astrid M. L. Kappers

Source :

Experimental brain research [ 0014-4819 ] ; 2007.

RBID : Pascal:07-0151543

Descripteurs français

Pascal (Inist)
- Courbure, Pouce, Main, Tâche discrimination, Tâche manuelle, Homme, Perception haptique.

English descriptors

KwdEn :
- Curvature, Discrimination task, Hand, Haptic perception, Human, Manual task, Thumb.

Abstract

The ability of humans to discriminate cur vature was investigated for different finger conditions. The experiments were conducted in which subjects explored cylindrically curved stimuli by touch. Using a 2-alternative forced-choice procedure, discrimination thresholds and biases were measured for several conditions. In 1-finger conditions, reference and test stimulus were explored with the same finger, whereas in 2-finger conditions these stimuli were felt with different fingers. Similar thresholds were obtained for the 1-finger conditions, in which either the preferred or the non-preferred index finger or the thumb was employed. However, significantly higher thresholds were found for the conditions in which subjects used two fingers, either of the same hand or of different hands. Interestingly, even higher thresholds were obtained for a 2-finger condition in which subjects explored the stimuli simultaneously instead of sequentially. In addition, subject-dependent biases were found in the 2-finger conditions. We conclude that the number of fingers and the mode of exploration have a considerable effect on performance in a haptic task such as curvature discrimination.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A08	`01`	`1`	`ENG`	`@1 Curvature discrimination in various finger conditions`
A11	`01`	`1`		`@1 VAN DER HORST (Bernard J.)`
A11	`02`	`1`		`@1 KAPPERS (Astrid M. L.)`
A14	`01`			`@1 Department of Physics of Man, Helmholtz Instituut, Universiteit Utrecht, Princetonplein 5 @2 3584 CC Utrecht @3 NLD @Z 1 aut. @Z 2 aut.`
A20				`@1 304-311`
A21				`@1 2007`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 12535 @5 354000147006200020`
A44				`@0 0000 @1 © 2007 INIST-CNRS. All rights reserved.`
A47	`01`	`1`		`@0 07-0151543`
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A61				`@0 A`
A64	`01`	`1`		`@0 Experimental brain research`
A66	`01`			`@0 DEU`
C01	`01`		`ENG`	@0 The ability of humans to discriminate cur vature was investigated for different finger conditions. The experiments were conducted in which subjects explored cylindrically curved stimuli by touch. Using a 2-alternative forced-choice procedure, discrimination thresholds and biases were measured for several conditions. In 1-finger conditions, reference and test stimulus were explored with the same finger, whereas in 2-finger conditions these stimuli were felt with different fingers. Similar thresholds were obtained for the 1-finger conditions, in which either the preferred or the non-preferred index finger or the thumb was employed. However, significantly higher thresholds were found for the conditions in which subjects used two fingers, either of the same hand or of different hands. Interestingly, even higher thresholds were obtained for a 2-finger condition in which subjects explored the stimuli simultaneously instead of sequentially. In addition, subject-dependent biases were found in the 2-finger conditions. We conclude that the number of fingers and the mode of exploration have a considerable effect on performance in a haptic task such as curvature discrimination.
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C03	`01`	`X`	`ENG`	`@0 Curvature @5 01`
C03	`01`	`X`	`SPA`	`@0 Curvatura @5 01`
C03	`02`	`X`	`FRE`	`@0 Pouce @5 02`
C03	`02`	`X`	`ENG`	`@0 Thumb @5 02`
C03	`02`	`X`	`SPA`	`@0 Pulgar @5 02`
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C03	`05`	`X`	`FRE`	`@0 Tâche manuelle @5 05`
C03	`05`	`X`	`ENG`	`@0 Manual task @5 05`
C03	`05`	`X`	`SPA`	`@0 Tarea manual @5 05`
C03	`06`	`X`	`FRE`	`@0 Homme @5 54`
C03	`06`	`X`	`ENG`	`@0 Human @5 54`
C03	`06`	`X`	`SPA`	`@0 Hombre @5 54`
C03	`07`	`X`	`FRE`	`@0 Perception haptique @4 CD @5 96`
C03	`07`	`X`	`ENG`	`@0 Haptic perception @4 CD @5 96`
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Format Inist (serveur)

NO :	PASCAL 07-0151543 INIST
ET :	Curvature discrimination in various finger conditions
AU :	VAN DER HORST (Bernard J.); KAPPERS (Astrid M. L.)
AF :	Department of Physics of Man, Helmholtz Instituut, Universiteit Utrecht, Princetonplein 5/3584 CC Utrecht/Pays-Bas (1 aut., 2 aut.)
DT :	Publication en série; Niveau analytique
SO :	Experimental brain research; ISSN 0014-4819; Coden EXBRAP; Allemagne; Da. 2007; Vol. 177; No. 3; Pp. 304-311
LA :	Anglais
EA :	The ability of humans to discriminate cur vature was investigated for different finger conditions. The experiments were conducted in which subjects explored cylindrically curved stimuli by touch. Using a 2-alternative forced-choice procedure, discrimination thresholds and biases were measured for several conditions. In 1-finger conditions, reference and test stimulus were explored with the same finger, whereas in 2-finger conditions these stimuli were felt with different fingers. Similar thresholds were obtained for the 1-finger conditions, in which either the preferred or the non-preferred index finger or the thumb was employed. However, significantly higher thresholds were found for the conditions in which subjects used two fingers, either of the same hand or of different hands. Interestingly, even higher thresholds were obtained for a 2-finger condition in which subjects explored the stimuli simultaneously instead of sequentially. In addition, subject-dependent biases were found in the 2-finger conditions. We conclude that the number of fingers and the mode of exploration have a considerable effect on performance in a haptic task such as curvature discrimination.
CC :	002A25E; 002B17A02
FD :	Courbure; Pouce; Main; Tâche discrimination; Tâche manuelle; Homme; Perception haptique
ED :	Curvature; Thumb; Hand; Discrimination task; Manual task; Human; Haptic perception
SD :	Curvatura; Pulgar; Mano; Tarea discriminatoria; Tarea manual; Hombre
LO :	INIST-12535.354000147006200020
ID :	07-0151543

Links to Exploration step

Pascal:07-0151543

Le document en format XML

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<ET>Curvature discrimination in various finger conditions</ET>
<AU>VAN DER HORST (Bernard J.); KAPPERS (Astrid M. L.)</AU>
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Curvature discrimination in various finger conditions

Curvature discrimination in various finger conditions

Source :

Descripteurs français

English descriptors

Abstract

Notice en format standard (ISO 2709)

Format Inist (serveur)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri