MovDisordV3, Main, Exploration, bibRecord, 004A46

Irregular jerky tremor, myoclonus, and thalamus: A study using low‐frequency stimulation

Identifieur interne : 004A46 ( Main/Exploration ); précédent : 004A45; suivant : 004A47

Irregular jerky tremor, myoclonus, and thalamus: A study using low‐frequency stimulation

Auteurs : Boulos Paul Bejjani ; Isabelle Arnulf ; Marie Vidailhet ; Bernard Pidoux [France] ; Philippe Damier ; Savvas Papadopoulos ; Anne-Marie Bonnet ; Philippe Cornu ; Didier Dormont ; Yves Agid [France]

Source :

Movement Disorders [ 0885-3185 ] ; 2000-09.

RBID : ISTEX:D4B7FE5071D2D91CDCB0CBC286530283438CA157

Descripteurs français

Pascal (Inist)
- Adulte, Basse fréquence, Essentiel, Myoclonie, Parkinson maladie, Stimulus électrique, Technique, Thalamus, Traitement instrumental, Tremblement, Unilatéral.
Wicri :
- topic : Adulte.

English descriptors

KwdEn :
- Adult, Aged, Arm, Electric Stimulation (adverse effects), Electrical stimulus, Electrodes, Implanted, Essential, Functional Laterality, Humans, Instrumentation therapy, Low frequency, Middle Aged, Myoclonus, Myoclonus (etiology), Myoclonus (physiopathology), Parkinson Disease (physiopathology), Parkinson Disease (therapy), Parkinson disease, Parkinson's disease, Stimulation, Technique, Thalamus, Thalamus (physiopathology), Thalamus (surgery), Tremor, Tremor (etiology), Tremor (physiopathology), Unilateral, Ventral Thalamic Nuclei (physiopathology).
MESH :
- adverse effects : Electric Stimulation.
- etiology : Myoclonus, Tremor.
- physiopathology : Myoclonus, Parkinson Disease, Thalamus, Tremor, Ventral Thalamic Nuclei.
- surgery : Thalamus.
- therapy : Parkinson Disease.
- Aged, Arm, Electrodes, Implanted, Functional Laterality, Humans, Middle Aged.

Abstract

High‐frequency thalamic stimulation alleviates tremor in Parkinson's disease (PD) and essential tremor (ET). The origin of thalamic myoclonus is unexplained and the effects of low‐frequency thalamic stimulation on movement control are still unknown. We studied the effects of stimulation at a low frequency of 15 Hz in five drug‐free patients (3 PD, 2 ET) 6 months after thalamic implantation of quadripolar electrodes (unilateral in four patients, bilateral in one patient). Clinical, electrophysiological, and videotaped assessment, using a monopolar 15 Hz frequency (3 V, 90 μs) stimulation current applied simultaneously through two adjacent contacts of the electrode, was performed. We observed myoclonus and irregular jerky tremor in the upper limb contralateral to the site of stimulation. The jerks lasted less than 200 ms, were irregular and not synchronous with stimulation, were superimposed on rest or postural tremor, and increased in response to tactile, proprioceptive, or vibratory stimuli. The fact that this complex movement disorder can be induced by low‐frequency stimulation in the ventral intermediate nucleus (Vim) of the thalamus suggests that it results, at least partly, from dysfunction of the Vim and possibly adjacent nuclei of the thalamus.

Url:

https://api.istex.fr/document/D4B7FE5071D2D91CDCB0CBC286530283438CA157/fulltext/pdf

DOI: 10.1002/1531-8257(200009)15:5<919::AID-MDS1024>3.0.CO;2-0

Affiliations:

Le document en format XML

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<term>Electric Stimulation (adverse effects)</term>
<term>Electrical stimulus</term>
<term>Electrodes, Implanted</term>
<term>Essential</term>
<term>Functional Laterality</term>
<term>Humans</term>
<term>Instrumentation therapy</term>
<term>Low frequency</term>
<term>Middle Aged</term>
<term>Myoclonus</term>
<term>Myoclonus (etiology)</term>
<term>Myoclonus (physiopathology)</term>
<term>Parkinson Disease (physiopathology)</term>
<term>Parkinson Disease (therapy)</term>
<term>Parkinson disease</term>
<term>Parkinson's disease</term>
<term>Stimulation</term>
<term>Technique</term>
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<term>Thalamus (physiopathology)</term>
<term>Thalamus (surgery)</term>
<term>Tremor</term>
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<term>Tremor (physiopathology)</term>
<term>Unilateral</term>
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<term>Tremor</term>
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<term>Parkinson Disease</term>
<term>Thalamus</term>
<term>Tremor</term>
<term>Ventral Thalamic Nuclei</term>
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<keywords scheme="MESH" qualifier="therapy" xml:lang="en"><term>Parkinson Disease</term>
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<keywords scheme="MESH" xml:lang="en"><term>Aged</term>
<term>Arm</term>
<term>Electrodes, Implanted</term>
<term>Functional Laterality</term>
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<term>Stimulus électrique</term>
<term>Technique</term>
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<front><div type="abstract" xml:lang="en">High‐frequency thalamic stimulation alleviates tremor in Parkinson's disease (PD) and essential tremor (ET). The origin of thalamic myoclonus is unexplained and the effects of low‐frequency thalamic stimulation on movement control are still unknown. We studied the effects of stimulation at a low frequency of 15 Hz in five drug‐free patients (3 PD, 2 ET) 6 months after thalamic implantation of quadripolar electrodes (unilateral in four patients, bilateral in one patient). Clinical, electrophysiological, and videotaped assessment, using a monopolar 15 Hz frequency (3 V, 90 μs) stimulation current applied simultaneously through two adjacent contacts of the electrode, was performed. We observed myoclonus and irregular jerky tremor in the upper limb contralateral to the site of stimulation. The jerks lasted less than 200 ms, were irregular and not synchronous with stimulation, were superimposed on rest or postural tremor, and increased in response to tactile, proprioceptive, or vibratory stimuli. The fact that this complex movement disorder can be induced by low‐frequency stimulation in the ventral intermediate nucleus (Vim) of the thalamus suggests that it results, at least partly, from dysfunction of the Vim and possibly adjacent nuclei of the thalamus.</div>
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<name sortKey="Vidailhet, Marie" sort="Vidailhet, Marie" uniqKey="Vidailhet M" first="Marie" last="Vidailhet">Marie Vidailhet</name>
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Movement Disorders (revue)

Irregular jerky tremor, myoclonus, and thalamus: A study using low‐frequency stimulation

Irregular jerky tremor, myoclonus, and thalamus: A study using low‐frequency stimulation

Source :

Descripteurs français

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)
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