Short latency afferent inhibition and facilitation in patients with writer's cramp
Identifieur interne : 003733 ( Main/Exploration ); précédent : 003732; suivant : 003734Short latency afferent inhibition and facilitation in patients with writer's cramp
Auteurs : Kirn R. Kessler [Allemagne] ; Diane Ruge [Allemagne] ; Tihomir V. Ili [Allemagne] ; Ulf Ziemann [Allemagne]Source :
- Movement Disorders [ 0885-3185 ] ; 2005-02.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
- KwdEn :
- Adult, Afferent Pathways (physiopathology), Analysis of Variance, Case-Control Studies, Dystonic Disorders (physiopathology), Electric Stimulation (methods), Electromyography (methods), Evoked Potentials, Motor (drug effects), Evoked Potentials, Motor (physiology), Facilitation, Female, Functional Laterality, Human, Humans, Magnetics, Male, Median Nerve (physiology), Median Nerve (radiation effects), Middle Aged, Motor Cortex (physiopathology), Motor Cortex (radiation effects), Muscle, Skeletal (innervation), Muscle, Skeletal (physiopathology), Nervous system diseases, Neural Inhibition (physiology), Neural Inhibition (radiation effects), Reaction Time (physiology), Reaction Time (radiation effects), Writer cramp, cortical excitability, focal dystonia, median nerve stimulation, motor cortex, transcranial magnetic stimulation, writer's cramp.
- MESH :
- drug effects : Evoked Potentials, Motor.
- innervation : Muscle, Skeletal.
- methods : Electric Stimulation, Electromyography.
- physiology : Evoked Potentials, Motor, Median Nerve, Neural Inhibition, Reaction Time.
- physiopathology : Afferent Pathways, Dystonic Disorders, Motor Cortex, Muscle, Skeletal.
- radiation effects : Median Nerve, Motor Cortex, Neural Inhibition, Reaction Time.
- Adult, Analysis of Variance, Case-Control Studies, Female, Functional Laterality, Humans, Magnetics, Male, Middle Aged.
Abstract
Patients with writer's cramp (WC) show abnormalities of sensorimotor integration possibly contributing to their motor deficit. We studied sensorimotor integration by determining short‐latency afferent inhibition (SAI) in 12 WC patients and 10 age‐matched healthy controls. A conditioning electrical median nerve stimulus was followed 14 to 36 msec later by transcranial magnetic stimulation of the contralateral primary motor cortex, and motor evoked potentials (MEP) were recorded from the relaxed or contracting abductor pollicis brevis muscle (APB). SAI was normal in WC but during APB relaxation SAI was followed by abnormal MEP facilitation, which was absent during APB contraction and in the controls. These findings suggest that somatosensory short‐latency inhibitory input into the primary motor cortex is normal in WC, whereas a later excitatory input, which very likely reflects the long‐latency reflex II, is exaggerated. © 2004 Movement Disorder Society
Url:
DOI: 10.1002/mds.20295
Affiliations:
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Ili</name><affiliation wicri:level="1"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Motor Cortex Laboratory, Department of Neurology, J.W. Goethe University, Frankfurt/Main</wicri:regionArea><wicri:noRegion>Frankfurt/Main</wicri:noRegion><wicri:noRegion>Frankfurt/Main</wicri:noRegion></affiliation></author><author><name sortKey="Ziemann, Ulf" sort="Ziemann, Ulf" uniqKey="Ziemann U" first="Ulf" last="Ziemann">Ulf Ziemann</name><affiliation wicri:level="1"><country xml:lang="fr">Allemagne</country><wicri:regionArea>Motor Cortex Laboratory, Department of Neurology, J.W. Goethe University, Frankfurt/Main</wicri:regionArea><wicri:noRegion>Frankfurt/Main</wicri:noRegion><wicri:noRegion>Frankfurt/Main</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Movement Disorders</title><title level="j" type="sub">Official Journal of the Movement Disorder Society</title><title level="j" type="abbrev">Mov. 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We studied sensorimotor integration by determining short‐latency afferent inhibition (SAI) in 12 WC patients and 10 age‐matched healthy controls. A conditioning electrical median nerve stimulus was followed 14 to 36 msec later by transcranial magnetic stimulation of the contralateral primary motor cortex, and motor evoked potentials (MEP) were recorded from the relaxed or contracting abductor pollicis brevis muscle (APB). SAI was normal in WC but during APB relaxation SAI was followed by abnormal MEP facilitation, which was absent during APB contraction and in the controls. These findings suggest that somatosensory short‐latency inhibitory input into the primary motor cortex is normal in WC, whereas a later excitatory input, which very likely reflects the long‐latency reflex II, is exaggerated. © 2004 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Allemagne</li></country></list><tree><country name="Allemagne"><noRegion><name sortKey="Kessler, Kirn R" sort="Kessler, Kirn R" uniqKey="Kessler K" first="Kirn R." last="Kessler">Kirn R. Kessler</name></noRegion><name sortKey="Ili, Tihomir V" sort="Ili, Tihomir V" uniqKey="Ili T" first="Tihomir V." last="Ili">Tihomir V. Ili</name><name sortKey="Ruge, Diane" sort="Ruge, Diane" uniqKey="Ruge D" first="Diane" last="Ruge">Diane Ruge</name><name sortKey="Ziemann, Ulf" sort="Ziemann, Ulf" uniqKey="Ziemann U" first="Ulf" last="Ziemann">Ulf Ziemann</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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