HapticV1, Main, Merge, bibRecord, 006266

Time course of haptic stabilization of posture

Identifieur interne : 006266 ( Main/Merge ); précédent : 006265; suivant : 006267

Time course of haptic stabilization of posture

Auteurs : Ely Rabin [États-Unis] ; Paul Dizio [États-Unis] ; James R. Lackner [États-Unis]

Source :

Experimental brain research [ 0014-4819 ] ; 2006.

RBID : Pascal:06-0335329

Descripteurs français

Pascal (Inist)
- Stabilisation, Posture, Orteil, Force, Constante temps, Proprioception, Homme, Perception haptique.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Force, Haptic perception, Human, Posture, Proprioception, Stabilization, Time constant, Toe.

Abstract

Contact of the index finger with a stable surface greatly attenuates postural sway in blindfolded subjects. The time course of postural stabilization was measured after subjects made finger contact with a surface. Subjects (n= 12) were tested standing in a heel-to-toe stance in 25 s duration trials. The subject stood with the index finger above but not contacting a laterally placed surface, and made finger contact when cued midway through the trial. Fingertip contact forces stabilized with a time constant of less than 0.5 s and postural stabilization occurred rapidly following fingertip contact. Sway amplitude of center of pressure of the feet decreased by half with a time constant of less than 1.6 s. The stereotypical pattern of force changes at the fingertip leading correlated changes in center of pressure by ∼300 ms was evident within the first 0.5 s of finger contact. We conclude that the fingertip can serve as a sensory-motor probe that is stabilized nearly immediately on contact with a surface and that from the moment of contact the fingertip contributes sensory signals used to control sway.

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to stream PascalFrancis, to step Corpus: 000C87
to stream PascalFrancis, to step Curation: 000819
to stream PascalFrancis, to step Checkpoint: 000909

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Pascal:06-0335329

Le document en format XML

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<author><name sortKey="Lackner, James R" sort="Lackner, James R" uniqKey="Lackner J" first="James R." last="Lackner">James R. Lackner</name>
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<term>Stabilization</term>
<term>Time constant</term>
<term>Toe</term>
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<term>Posture</term>
<term>Orteil</term>
<term>Force</term>
<term>Constante temps</term>
<term>Proprioception</term>
<term>Homme</term>
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<front><div type="abstract" xml:lang="en">Contact of the index finger with a stable surface greatly attenuates postural sway in blindfolded subjects. The time course of postural stabilization was measured after subjects made finger contact with a surface. Subjects (n= 12) were tested standing in a heel-to-toe stance in 25 s duration trials. The subject stood with the index finger above but not contacting a laterally placed surface, and made finger contact when cued midway through the trial. Fingertip contact forces stabilized with a time constant of less than 0.5 s and postural stabilization occurred rapidly following fingertip contact. Sway amplitude of center of pressure of the feet decreased by half with a time constant of less than 1.6 s. The stereotypical pattern of force changes at the fingertip leading correlated changes in center of pressure by ∼300 ms was evident within the first 0.5 s of finger contact. We conclude that the fingertip can serve as a sensory-motor probe that is stabilized nearly immediately on contact with a surface and that from the moment of contact the fingertip contributes sensory signals used to control sway.</div>
</front>
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<name sortKey="Lackner, James R" sort="Lackner, James R" uniqKey="Lackner J" first="James R." last="Lackner">James R. Lackner</name>
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Time course of haptic stabilization of posture

Time course of haptic stabilization of posture

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