HapticV1, Main, Exploration, bibRecordById, pubmed:14738773

Commanding the direction of passive whole-body rotations facilitates egocentric spatial updating

Identifieur interne : 006C63 ( Main/Exploration ); précédent : 006C62; suivant : 006C64

Commanding the direction of passive whole-body rotations facilitates egocentric spatial updating

Auteurs : Yves-André Fery [France] ; Richard Magnac [France] ; Isabelle Israël [France]

Source :

Cognition [ 0010-0277 ] ; 2004.

RBID : Pascal:04-0131540

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Contrôle moteur, Perception espace, Kinesthésie, Système vestibulaire, Sensibilité tactile, Perception, Cognition, Motricité, Homme.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Adolescent, Adult, Cognition, Experimental study, Female, Human, Humans, Kinesthesia, Male, Motor control, Motricity, Movement (physiology), Perception, Rotation, Space Perception, Space perception, Spatial Behavior, Tactile sensitivity, Vestibular system.
MESH :
- physiology : Movement.
- Adolescent, Adult, Female, Humans, Male, Rotation, Space Perception, Spatial Behavior.

Abstract

In conditions of slow passive transport without vision, even tenuous inertial signals from semicircular canals and the haptic-kinaesthetic system should provide information about changes relative to the environment provided that it is possible to command the direction of the body's movements voluntarily. Without such control, spatial updating should be impaired because incoming signals cannot be compared to the expected sensory consequences provided by voluntary command. Participants were seated in a rotative robot (Robuter®) and learnt the positions of five objects in their surroundings. They were then blindfolded and assigned either to the active group (n = 7) or to the passive group (n = 7). Members of the active group used a joystick to control the direction of rotation of the robot. The acceleration (25°/s²) and plateau velocity (9°/s) were kept constant. The participants of the passive group experienced the same stimuli passively. After the rotations, the participants had to point to the objects whilst blindfolded. Participants in the active group significantly outperformed the participants in the passive group. Thus, even tenuous inertial cues are useful for spatial updating in the absence of vision, provided that such signals are integrated as feedback associated with intended motor command.

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">In conditions of slow passive transport without vision, even tenuous inertial signals from semicircular canals and the haptic-kinaesthetic system should provide information about changes relative to the environment provided that it is possible to command the direction of the body's movements voluntarily. Without such control, spatial updating should be impaired because incoming signals cannot be compared to the expected sensory consequences provided by voluntary command. Participants were seated in a rotative robot (Robuter®) and learnt the positions of five objects in their surroundings. They were then blindfolded and assigned either to the active group (n = 7) or to the passive group (n = 7). Members of the active group used a joystick to control the direction of rotation of the robot. The acceleration (25°/s<sup>2</sup>
) and plateau velocity (9°/s) were kept constant. The participants of the passive group experienced the same stimuli passively. After the rotations, the participants had to point to the objects whilst blindfolded. Participants in the active group significantly outperformed the participants in the passive group. Thus, even tenuous inertial cues are useful for spatial updating in the absence of vision, provided that such signals are integrated as feedback associated with intended motor command.</div>
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Commanding the direction of passive whole-body rotations facilitates egocentric spatial updating

Commanding the direction of passive whole-body rotations facilitates egocentric spatial updating

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

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