HapticV1, Main, Exploration, bibRecord, 003F42

Adaptation of the precision grip orientation to a visual-haptic mismatch

Identifieur interne : 003F42 ( Main/Exploration ); précédent : 003F41; suivant : 003F43

Adaptation of the precision grip orientation to a visual-haptic mismatch

Auteurs : Cornelia Weigelt [Allemagne] ; Otmar Bock [Allemagne]

Source :

Experimental brain research [ 0014-4819 ] ; 2010.

RBID : Pascal:10-0177086

Descripteurs français

Pascal (Inist)
- Préhension, Orientation, Séquentiel, Pouce, Main, Apprentissage, Cinématique, Homme, Perception haptique.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Gripping, Hand, Haptic perception, Human, Kinematics, Learning, Orientation, Sequential, Thumb.

Abstract

Using a sequential-exposure approach, we examined sensorimotor adaptation of precision grip orientation to a visuo-haptic mismatch. Subjects (n = 41) were asked to grasp with thumb and index finger mirror-viewed objects. They could not see their hand due to the mirror, but they could feel an object located behind the mirror in the same place as the viewed object. When a -15° orientation mismatch between viewed and felt object was introduced, subjects adapted to it by gradually modifying the orientation of their finger opposition axis. When the visuo-haptic mismatch further changed to -30° or to +15°, subjects continued to perform according to their pre-established adaptive state, and gradually modified it until it became adequate for the new mismatch. This outcome supports the existence of a continuously acting mechanism for grasping adaptation, similar to that previously described for pointing and tracking adaptation. Precision grip adaptation generalized to unpracticed object orientations, which suggests that adaptation was based on a sensorimotor recalibration rather than the learning of specific stimulus-response pairs. Transfer to pointing movements was found only when similarity to the grasp adaptation task was high.

Affiliations:

Allemagne

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000650
to stream PascalFrancis, to step Curation: 000D55
to stream PascalFrancis, to step Checkpoint: 000504
to stream Main, to step Merge: 004003
to stream Main, to step Curation: 003F42

Le document en format XML

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<term>Kinematics</term>
<term>Learning</term>
<term>Orientation</term>
<term>Sequential</term>
<term>Thumb</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Préhension</term>
<term>Orientation</term>
<term>Séquentiel</term>
<term>Pouce</term>
<term>Main</term>
<term>Apprentissage</term>
<term>Cinématique</term>
<term>Homme</term>
<term>Perception haptique</term>
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<front><div type="abstract" xml:lang="en">Using a sequential-exposure approach, we examined sensorimotor adaptation of precision grip orientation to a visuo-haptic mismatch. Subjects (n = 41) were asked to grasp with thumb and index finger mirror-viewed objects. They could not see their hand due to the mirror, but they could feel an object located behind the mirror in the same place as the viewed object. When a -15° orientation mismatch between viewed and felt object was introduced, subjects adapted to it by gradually modifying the orientation of their finger opposition axis. When the visuo-haptic mismatch further changed to -30° or to +15°, subjects continued to perform according to their pre-established adaptive state, and gradually modified it until it became adequate for the new mismatch. This outcome supports the existence of a continuously acting mechanism for grasping adaptation, similar to that previously described for pointing and tracking adaptation. Precision grip adaptation generalized to unpracticed object orientations, which suggests that adaptation was based on a sensorimotor recalibration rather than the learning of specific stimulus-response pairs. Transfer to pointing movements was found only when similarity to the grasp adaptation task was high.</div>
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<name sortKey="Bock, Otmar" sort="Bock, Otmar" uniqKey="Bock O" first="Otmar" last="Bock">Otmar Bock</name>
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Adaptation of the precision grip orientation to a visual-haptic mismatch

Adaptation of the precision grip orientation to a visual-haptic mismatch

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri