MovDisordV3, Main, Exploration, bibRecord, 005959

A defect of kinesthesia in Parkinson's disease

Identifieur interne : 005959 ( Main/Exploration ); précédent : 005958; suivant : 005960

A defect of kinesthesia in Parkinson's disease

Auteurs : Klockgether [Allemagne] ; Maike Borutta [Allemagne] ; Herbert Rapp [Allemagne] ; Sybille Spieker [Allemagne] ; Johannes Dichgans [Allemagne]

Source :

Movement Disorders [ 0885-3185 ] ; 1995-07.

RBID : ISTEX:0752CB14867A0ABF057BDA14BF87648AA7F18BB9

English descriptors

KwdEn :
- Adult, Aged, Corollary discharges, Distance Perception (physiology), Feedback (physiology), Female, Functional Laterality (physiology), Humans, Kinesthesia, Kinesthesis (physiology), Male, Middle Aged, Orientation (physiology), Parkinson Disease (diagnosis), Parkinson Disease (physiopathology), Parkinson's disease, Psychomotor Performance (physiology), Reaction Time (physiology), Reference Values, Visual feedback.
MESH :
- diagnosis : Parkinson Disease.
- physiology : Distance Perception, Feedback, Functional Laterality, Kinesthesis, Orientation, Psychomotor Performance, Reaction Time.
- physiopathology : Parkinson Disease.
- Adult, Aged, Female, Humans, Male, Middle Aged, Reference Values.

Abstract

Patients suffering from Parkinson's disease (PD) are more dependent on visual feedback during movement than are normals. Studying two‐dimensional pointing movements, we recently found that PD patients undershoot targets when vision of their own moving hand is occluded but not when complete vision is provided or when the target is extinguished immediately before movement onset. In the absence of vision, information about position of the moving hand may originate from peripheral kinesthetic feedback and from corollary discharges derved from the efferent motor signal. To find out which of both mechanisms–kinesthetic feedback or corollary discharge–is defective in PD, we compared active movements with imposed movements in which the hand is passively moved by the experimenter, whereas vision of the hand was occluded under either condition. In agreement with our earlier findings, slow, active pointing movements of PD patients were hypometric. In addition, PD patients terminated passively imposed movements of comparable speed earlier than did normals, with the consequence that imposed movements were equally hypometric. Our results make it unlikely that disturbed corollary discharge is responsible for hypometria under nonvisual conditions. Instead, the data suggest that PD patients have a defect of kinesthesia in slowly executed movements.

Url:

https://api.istex.fr/document/0752CB14867A0ABF057BDA14BF87648AA7F18BB9/fulltext/pdf

DOI: 10.1002/mds.870100410

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">Patients suffering from Parkinson's disease (PD) are more dependent on visual feedback during movement than are normals. Studying two‐dimensional pointing movements, we recently found that PD patients undershoot targets when vision of their own moving hand is occluded but not when complete vision is provided or when the target is extinguished immediately before movement onset. In the absence of vision, information about position of the moving hand may originate from peripheral kinesthetic feedback and from corollary discharges derved from the efferent motor signal. To find out which of both mechanisms–kinesthetic feedback or corollary discharge–is defective in PD, we compared active movements with imposed movements in which the hand is passively moved by the experimenter, whereas vision of the hand was occluded under either condition. In agreement with our earlier findings, slow, active pointing movements of PD patients were hypometric. In addition, PD patients terminated passively imposed movements of comparable speed earlier than did normals, with the consequence that imposed movements were equally hypometric. Our results make it unlikely that disturbed corollary discharge is responsible for hypometria under nonvisual conditions. Instead, the data suggest that PD patients have a defect of kinesthesia in slowly executed movements.</div>
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Movement Disorders (revue)

A defect of kinesthesia in Parkinson's disease

A defect of kinesthesia in Parkinson's disease

Source :

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

	Movement Disorders (revue)
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.