MovDisordV3, Main, Exploration, bibRecord, 003154

Temporal discrimination of two passive movements in writer's cramp

Identifieur interne : 003154 ( Main/Exploration ); précédent : 003153; suivant : 003155

Temporal discrimination of two passive movements in writer's cramp

Auteurs : Michele Tinazzi [Italie] ; Mirta Fiorio [Italie] ; Clementina Stanzani [Italie] ; Giuseppe Moretto [Italie] ; Nicola Smania [Italie] ; Antonio Fiaschi [Italie] ; Kailash P. Bhatia [Royaume-Uni] ; John C. Rothwell [Royaume-Uni]

Source :

Movement Disorders [ 0885-3185 ] ; 2006-08.

RBID : ISTEX:F9E6EE8063C509E764F4AC48A67CD73A880CDE9D

Descripteurs français

Pascal (Inist)
- Crampe écrivain, Discrimination, Dystonie, Kinesthésie, Proprioception, Système nerveux pathologie.

English descriptors

KwdEn :
- Adult, Discrimination, Dystonia, Dystonic Disorders (physiopathology), Female, Hand, Humans, Kinesthesia, Male, Movement (physiology), Muscle, Skeletal (physiopathology), Nervous system diseases, Proprioception, Reference Values, Writer cramp, dystonia, kinesthesia, muscle afferents, proprioception, somatosensory system, temporal discrimination.
MESH :
- physiology : Movement.
- physiopathology : Dystonic Disorders, Muscle, Skeletal.
- Adult, Female, Hand, Humans, Male, Reference Values.

Abstract

Although movement abnormalities are predominant symptoms of dystonia, patients also have alterations in temporal as well as spatial discrimination of cutaneous inputs. Here, we use a recently described method to test whether deficits also exist in temporal discrimination of proprioceptive inputs. Percutaneous electrical stimulation of the motor point of the first dorsal interosseous (FDI) muscle, and of the flexor carpii radialis (FCR) muscle separately, was used to produce a nonpainful contraction of the muscles that caused index finger abduction and wrist flexion, respectively. In 10 patients with writer's cramp and in 10 healthy subjects, pairs of stimuli separated by different time intervals were given and subjects were asked to report whether they perceived a single or a double index finger abduction movement or wrist flexion. The threshold value was the shortest interval at which the subjects reported two separated movements (temporal discrimination motor threshold [TDMT]). In both writer's cramp patients and controls, TDMTs were higher for FCR than for FDI. But in contrast to the reduced temporal discrimination reported for cutaneous sensation, there was no significant difference in either muscle between TDMT in patients and normal subjects. We conclude that temporal processing of muscle and cutaneous afferents is differentially affected in focal hand dystonia. © 2006 Movement Disorder Society

Url:

https://api.istex.fr/document/F9E6EE8063C509E764F4AC48A67CD73A880CDE9D/fulltext/pdf

DOI: 10.1002/mds.20892

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">Although movement abnormalities are predominant symptoms of dystonia, patients also have alterations in temporal as well as spatial discrimination of cutaneous inputs. Here, we use a recently described method to test whether deficits also exist in temporal discrimination of proprioceptive inputs. Percutaneous electrical stimulation of the motor point of the first dorsal interosseous (FDI) muscle, and of the flexor carpii radialis (FCR) muscle separately, was used to produce a nonpainful contraction of the muscles that caused index finger abduction and wrist flexion, respectively. In 10 patients with writer's cramp and in 10 healthy subjects, pairs of stimuli separated by different time intervals were given and subjects were asked to report whether they perceived a single or a double index finger abduction movement or wrist flexion. The threshold value was the shortest interval at which the subjects reported two separated movements (temporal discrimination motor threshold [TDMT]). In both writer's cramp patients and controls, TDMTs were higher for FCR than for FDI. But in contrast to the reduced temporal discrimination reported for cutaneous sensation, there was no significant difference in either muscle between TDMT in patients and normal subjects. We conclude that temporal processing of muscle and cutaneous afferents is differentially affected in focal hand dystonia. © 2006 Movement Disorder Society</div>
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Movement Disorders (revue)

Temporal discrimination of two passive movements in writer's cramp

Temporal discrimination of two passive movements in writer's cramp

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Descripteurs français

English descriptors

Abstract

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

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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	Movement Disorders (revue)
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