MovDisordV3, PubMed, Checkpoint, bibRecord, 004885

Abnormal sensorimotor integration in writer's cramp: study of contingent negative variation.

Identifieur interne : 004885 ( PubMed/Checkpoint ); précédent : 004884; suivant : 004886

Abnormal sensorimotor integration in writer's cramp: study of contingent negative variation.

Auteurs : A. Ikeda [Japon] ; H. Shibasaki ; R. Kaji ; K. Terada ; T. Nagamine ; M. Honda ; T. Hamano ; J. Kimura

Source :

Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 1996.

RBID : pubmed:8914095

English descriptors

KwdEn :
- Adult, Aged, Brain Mapping, Cerebral Cortex (physiopathology), Contingent Negative Variation (physiology), Dystonia (physiopathology), Female, Functional Laterality (physiology), Handwriting, Humans, Male, Middle Aged, Muscle Cramp (physiopathology).
MESH :
- physiology : Contingent Negative Variation, Functional Laterality.
- physiopathology : Cerebral Cortex, Dystonia, Muscle Cramp.
- Adult, Aged, Brain Mapping, Female, Handwriting, Humans, Male, Middle Aged.

Abstract

To investigate the pathophysiology of idiopathic focal dystonia, we recorded contingent negative variation (CNV) as a physiological index of sensorimotor integration in 14 right-handed patients with writer's cramp and compared it with normative data. CNV was recorded in the S2 choice reaction time paradigm: Two kinds of auditory S2 (Go or No-Go) were given 2 s after the auditory S1, and the subject reacted only to the Go signal by extending the wrist. In normal subjects, the late CNV amplitude had no difference at Cz between left- and right-hand tasks and was symmetric without significant amplitude laterality irrespective of the side of hand movement. In patients with writer's cramp, the late CNV amplitude at Cz was relatively larger for the left-hand task than the right-hand task (p < 0.03), and a significant amplitude laterality of the late CNV (larger on the right) was present especially at the central area for the right-hand task (p < 0.03). Since the late CNV is known to be generated, at least in part, from primary and supplementary motor cortices, the significant laterality of the late CNV seen with the right-hand task in patients with writer's cramp might represent functional abnormality of motor cortices possibly as the result of basal ganglia function.

DOI: 10.1002/mds.870110614
PubMed: 8914095

Affiliations:

Japon

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Le document en format XML

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<author><name sortKey="Ikeda, A" sort="Ikeda, A" uniqKey="Ikeda A" first="A" last="Ikeda">A. Ikeda</name>
<affiliation wicri:level="1"><nlm:affiliation>Department of Brain Pathophysiology, Kyoto University School of Medicine, Japan.</nlm:affiliation>
<country xml:lang="fr">Japon</country>
<wicri:regionArea>Department of Brain Pathophysiology, Kyoto University School of Medicine</wicri:regionArea>
<wicri:noRegion>Kyoto University School of Medicine</wicri:noRegion>
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<author><name sortKey="Shibasaki, H" sort="Shibasaki, H" uniqKey="Shibasaki H" first="H" last="Shibasaki">H. Shibasaki</name>
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<author><name sortKey="Kaji, R" sort="Kaji, R" uniqKey="Kaji R" first="R" last="Kaji">R. Kaji</name>
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<author><name sortKey="Terada, K" sort="Terada, K" uniqKey="Terada K" first="K" last="Terada">K. Terada</name>
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<author><name sortKey="Nagamine, T" sort="Nagamine, T" uniqKey="Nagamine T" first="T" last="Nagamine">T. Nagamine</name>
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<author><name sortKey="Honda, M" sort="Honda, M" uniqKey="Honda M" first="M" last="Honda">M. Honda</name>
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<author><name sortKey="Hamano, T" sort="Hamano, T" uniqKey="Hamano T" first="T" last="Hamano">T. Hamano</name>
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<author><name sortKey="Kimura, J" sort="Kimura, J" uniqKey="Kimura J" first="J" last="Kimura">J. Kimura</name>
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<term>Contingent Negative Variation (physiology)</term>
<term>Dystonia (physiopathology)</term>
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<front><div type="abstract" xml:lang="en">To investigate the pathophysiology of idiopathic focal dystonia, we recorded contingent negative variation (CNV) as a physiological index of sensorimotor integration in 14 right-handed patients with writer's cramp and compared it with normative data. CNV was recorded in the S2 choice reaction time paradigm: Two kinds of auditory S2 (Go or No-Go) were given 2 s after the auditory S1, and the subject reacted only to the Go signal by extending the wrist. In normal subjects, the late CNV amplitude had no difference at Cz between left- and right-hand tasks and was symmetric without significant amplitude laterality irrespective of the side of hand movement. In patients with writer's cramp, the late CNV amplitude at Cz was relatively larger for the left-hand task than the right-hand task (p < 0.03), and a significant amplitude laterality of the late CNV (larger on the right) was present especially at the central area for the right-hand task (p < 0.03). Since the late CNV is known to be generated, at least in part, from primary and supplementary motor cortices, the significant laterality of the late CNV seen with the right-hand task in patients with writer's cramp might represent functional abnormality of motor cortices possibly as the result of basal ganglia function.</div>
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	Movement Disorders (revue)
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Movement Disorders (revue)

Abnormal sensorimotor integration in writer's cramp: study of contingent negative variation.

Abnormal sensorimotor integration in writer's cramp: study of contingent negative variation.

Source :

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

Pour générer des pages wiki