HapticV1, PascalFrancis, Corpus, bibRecord, 000C70

Hand orientation is insufficiently compensated for in haptic spatial perception

Identifieur interne : 000C70 ( PascalFrancis/Corpus ); précédent : 000C69; suivant : 000C71

Hand orientation is insufficiently compensated for in haptic spatial perception

Auteurs : Astrid M. L. Kappers ; Roderik F. Viergever

Source :

Experimental brain research [ 0014-4819 ] ; 2006.

RBID : Pascal:06-0407800

Descripteurs français

Pascal (Inist)
- Main, Orientation, Distance, Homme, Perception haptique.

English descriptors

KwdEn :
- Distance, Hand, Haptic perception, Human, Orientation.

Abstract

What humans haptically perceive as parallel is often far from physically parallel. These deviations from parallelity are highly significant and very systematic. There exists accumulating evidence, both psychophysical and neurophysiological, that what is haptically parallel is decided in a frame of reference intermediate to an allocentric and an egocentric one. The central question here concerns the nature of the egocentric frame of reference. In the literature, various kinds of egocentric reference frames are mentioned for haptic spatial tasks, such as hand-centered, arm-centered, and body-centered frames of reference. Thus far, it has not been possible to distinguish between body-centered, arm-centered, and hand-centered reference frames in our experiments, as hand and arm orientation always covaried with distance from the body-midline. In the current set of experiments the influence of body-centered and hand-centered reference frames could be dissociated. Subjects were asked to make a test bar haptically parallel to a reference bar in five different conditions, in which their hands were oriented straight ahead, rotated to the left, rotated to the right, rotated outward or rotated inward. If the reference frame is body-centered, the deviations should be independent of condition. If, on the other hand, the reference frame is hand-centered, the deviations should vary with condition. The results show that deviation size varies strongly with condition, exactly in the way predicted by the influence of a hand-centered egocentric frame of reference. Interestingly, this implies that subjects do not sufficiently take into account the orientation of their hands.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A08	`01`	`1`	`ENG`	`@1 Hand orientation is insufficiently compensated for in haptic spatial perception`
A11	`01`	`1`		`@1 KAPPERS (Astrid M. L.)`
A11	`02`	`1`		`@1 VIERGEVER (Roderik F.)`
A14	`01`			`@1 Helmholtz Instituut, Utrecht University, Princetonplein 5 @2 3584 CC, Utrecht @3 NLD @Z 1 aut. @Z 2 aut.`
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A23	`01`			`@0 ENG`
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A61				`@0 A`
A64	`01`	`1`		`@0 Experimental brain research`
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C01	`01`		`ENG`	@0 What humans haptically perceive as parallel is often far from physically parallel. These deviations from parallelity are highly significant and very systematic. There exists accumulating evidence, both psychophysical and neurophysiological, that what is haptically parallel is decided in a frame of reference intermediate to an allocentric and an egocentric one. The central question here concerns the nature of the egocentric frame of reference. In the literature, various kinds of egocentric reference frames are mentioned for haptic spatial tasks, such as hand-centered, arm-centered, and body-centered frames of reference. Thus far, it has not been possible to distinguish between body-centered, arm-centered, and hand-centered reference frames in our experiments, as hand and arm orientation always covaried with distance from the body-midline. In the current set of experiments the influence of body-centered and hand-centered reference frames could be dissociated. Subjects were asked to make a test bar haptically parallel to a reference bar in five different conditions, in which their hands were oriented straight ahead, rotated to the left, rotated to the right, rotated outward or rotated inward. If the reference frame is body-centered, the deviations should be independent of condition. If, on the other hand, the reference frame is hand-centered, the deviations should vary with condition. The results show that deviation size varies strongly with condition, exactly in the way predicted by the influence of a hand-centered egocentric frame of reference. Interestingly, this implies that subjects do not sufficiently take into account the orientation of their hands.
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Format Inist (serveur)

NO :	PASCAL 06-0407800 INIST
ET :	Hand orientation is insufficiently compensated for in haptic spatial perception
AU :	KAPPERS (Astrid M. L.); VIERGEVER (Roderik F.)
AF :	Helmholtz Instituut, Utrecht University, 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. 2006; Vol. 173; No. 3; Pp. 407-414; Bibl. 24 ref.
LA :	Anglais
EA :	What humans haptically perceive as parallel is often far from physically parallel. These deviations from parallelity are highly significant and very systematic. There exists accumulating evidence, both psychophysical and neurophysiological, that what is haptically parallel is decided in a frame of reference intermediate to an allocentric and an egocentric one. The central question here concerns the nature of the egocentric frame of reference. In the literature, various kinds of egocentric reference frames are mentioned for haptic spatial tasks, such as hand-centered, arm-centered, and body-centered frames of reference. Thus far, it has not been possible to distinguish between body-centered, arm-centered, and hand-centered reference frames in our experiments, as hand and arm orientation always covaried with distance from the body-midline. In the current set of experiments the influence of body-centered and hand-centered reference frames could be dissociated. Subjects were asked to make a test bar haptically parallel to a reference bar in five different conditions, in which their hands were oriented straight ahead, rotated to the left, rotated to the right, rotated outward or rotated inward. If the reference frame is body-centered, the deviations should be independent of condition. If, on the other hand, the reference frame is hand-centered, the deviations should vary with condition. The results show that deviation size varies strongly with condition, exactly in the way predicted by the influence of a hand-centered egocentric frame of reference. Interestingly, this implies that subjects do not sufficiently take into account the orientation of their hands.
CC :	002A25E; 002B17A01
FD :	Main; Orientation; Distance; Homme; Perception haptique
ED :	Hand; Orientation; Distance; Human; Haptic perception
SD :	Mano; Orientación; Distancia; Hombre
LO :	INIST-12535.354000133568380060
ID :	06-0407800

Links to Exploration step

Pascal:06-0407800

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Hand orientation is insufficiently compensated for in haptic spatial perception

Hand orientation is insufficiently compensated for in haptic spatial perception

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