HapticV1, Main, Merge, bibRecord, 006F43

Sensorimotor effects on central space representation: prism adaptation influences haptic and visual representations in normal subjects

Identifieur interne : 006F43 ( Main/Merge ); précédent : 006F42; suivant : 006F44

Sensorimotor effects on central space representation: prism adaptation influences haptic and visual representations in normal subjects

Auteurs : M. Girardi [France, Italie] ; R. D. Mcintosh [Royaume-Uni] ; C. Michel [France] ; G. Vallar [Italie] ; Y. Rossetti [France]

Source :

Neuropsychologia [ 0028-3932 ] ; 2004.

RBID : Pascal:04-0412465

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Négligence spatiale, Vision, Sensibilité tactile, Représentation spatiale, Kinesthésie, Perception, Cognition, Homme, Individu sain, Adaptation visuomotricce.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Cognition, Experimental study, Healthy subject, Human, Kinesthesia, Perception, Spatial neglect, Spatial representation, Tactile sensitivity, Vision.

Abstract

Prism adaptation improves visual and haptic manifestations of left neglect, and can induce a small but reliable simulation of left visual neglect in normal individuals. Here, we present two experiments in which the effects of prism adaptation on the representation of space were explored. In Experiment 1, normal subjects were required to locate the centre of a haptically explored circle, before and after adaptation tn leftward displacing prisms. In Experiment 2, a visual circle centring task was used. In both tasks, prism adaptation induced a significant rightward shift of performance. In addition, in both experiments, three classical measures of visuo-manual adaptation were taken: the visual shift, the proprioceptive shift and the total shift. The effects found on the haptic and visual tasks did not correlate with any of these measures. This suggests that the effects of prism adaptation on the circle centring tasks did not depend directly on the sensorimotor consequences of the adaptation. These results imply that prism adaptation can affect noetic levels of space representation in normal subjects, supporting the hypothesis that this low-level sensorimotor intervention can exert a bottom-up structuring influence on higher levels of cognitive integration.

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Pascal:04-0412465

Le document en format XML

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<front><div type="abstract" xml:lang="en">Prism adaptation improves visual and haptic manifestations of left neglect, and can induce a small but reliable simulation of left visual neglect in normal individuals. Here, we present two experiments in which the effects of prism adaptation on the representation of space were explored. In Experiment 1, normal subjects were required to locate the centre of a haptically explored circle, before and after adaptation tn leftward displacing prisms. In Experiment 2, a visual circle centring task was used. In both tasks, prism adaptation induced a significant rightward shift of performance. In addition, in both experiments, three classical measures of visuo-manual adaptation were taken: the visual shift, the proprioceptive shift and the total shift. The effects found on the haptic and visual tasks did not correlate with any of these measures. This suggests that the effects of prism adaptation on the circle centring tasks did not depend directly on the sensorimotor consequences of the adaptation. These results imply that prism adaptation can affect noetic levels of space representation in normal subjects, supporting the hypothesis that this low-level sensorimotor intervention can exert a bottom-up structuring influence on higher levels of cognitive integration.</div>
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Sensorimotor effects on central space representation: prism adaptation influences haptic and visual representations in normal subjects

Sensorimotor effects on central space representation: prism adaptation influences haptic and visual representations in normal subjects

Source :

Descripteurs français

English descriptors

Abstract

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

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