MovDisordV3, Main, Exploration, bibRecord, 002923

Cortical evoked potentials from pallidal stimulation in patients with primary generalized dystonia

Identifieur interne : 002923 ( Main/Exploration ); précédent : 002922; suivant : 002924

Cortical evoked potentials from pallidal stimulation in patients with primary generalized dystonia

Auteurs : Stephen Tisch [Royaume-Uni] ; John C. Rothwell [Royaume-Uni] ; Ludvic Zrinzo [Royaume-Uni] ; Kailash P. Bhatia [Royaume-Uni] ; Marwan Hariz [Royaume-Uni] ; Patricia Limousin [Royaume-Uni]

Source :

Movement Disorders [ 0885-3185 ] ; 2008-01-30.

RBID : ISTEX:A79C01262D2380144475EC51FB5CAEDBD9FC1E14

Descripteurs français

Pascal (Inist)
- Dystonie, Homme, Pathologie du système nerveux, Potentiel évoqué.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Adult, Brain Mapping, Cerebral Cortex (physiopathology), Deep Brain Stimulation (methods), Dystonia, Dystonic Disorders (pathology), Dystonic Disorders (physiopathology), Dystonic Disorders (therapy), Electrodes, Electroencephalography (methods), Evoked Potentials (physiology), Evoked Potentials (radiation effects), Evoked potential, Female, Functional Laterality, Globus Pallidus (physiology), Globus Pallidus (radiation effects), Human, Humans, Middle Aged, Nervous system diseases, Reaction Time (physiology), Reaction Time (radiation effects), cortical evoked potential, dystonia, pallidal DBS.
MESH :
- methods : Deep Brain Stimulation, Electroencephalography.
- pathology : Dystonic Disorders.
- physiology : Evoked Potentials, Globus Pallidus, Reaction Time.
- physiopathology : Cerebral Cortex, Dystonic Disorders.
- radiation effects : Evoked Potentials, Globus Pallidus, Reaction Time.
- therapy : Dystonic Disorders.
- Adult, Brain Mapping, Electrodes, Female, Functional Laterality, Humans, Middle Aged.

Abstract

Deep brain stimulation (DBS) of globus pallidus internus (GPi) has emerged as an effective treatment for primary generalized dystonia. However, the physiological mechanisms of improvement are not fully understood. Cortical activity in response to pallidal stimulation was recorded in 6 patients with primary generalized dystonia >6 months after bilateral GPi DBS. Scalp electroencephalogram was recorded using 60 surface electrodes during 10 Hz bipolar pallidal DBS at each electrode contact pair. Anatomical position of the electrode contacts in relation to the GPi, medial medullary lamina and globus pallidus externus (GPe) was determined from the postoperative stereotactic MRI. In all six patients an evoked potential (EP) was observed with average onset latency of 10.9 ms ± 0.77, peak latency 26.6 ms ± 1.6, distributed mainly over the ipsilateral hemisphere, maximal centrally. The mean amplitude of this potential was larger with stimulation in posteroventral GPi than in GPe (3.36 μV vs. 0.50 μV, P < 0.0001). The EP was absent in one patient‐side, ipsilateral to a previous thalamotomy. Low frequency GPi stimulation produces an EP distributed centrally over the ipsilateral hemisphere. The latency and distribution of the EP are consistent with stimulation of pallidothalamic neurons projecting to the sensorimotor cortex. Because the EP is larger and more consistently present with stimulation of posteroventral GPi than GPe, it may provide a physiological tool to identify contacts within the optimal surgical target. © 2007 Movement Disorder Society

Url:

https://api.istex.fr/document/A79C01262D2380144475EC51FB5CAEDBD9FC1E14/fulltext/pdf

DOI: 10.1002/mds.21835

Affiliations:

Le document en format XML

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<term>Deep Brain Stimulation (methods)</term>
<term>Dystonia</term>
<term>Dystonic Disorders (pathology)</term>
<term>Dystonic Disorders (physiopathology)</term>
<term>Dystonic Disorders (therapy)</term>
<term>Electrodes</term>
<term>Electroencephalography (methods)</term>
<term>Evoked Potentials (physiology)</term>
<term>Evoked Potentials (radiation effects)</term>
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<term>Functional Laterality</term>
<term>Globus Pallidus (physiology)</term>
<term>Globus Pallidus (radiation effects)</term>
<term>Human</term>
<term>Humans</term>
<term>Middle Aged</term>
<term>Nervous system diseases</term>
<term>Reaction Time (physiology)</term>
<term>Reaction Time (radiation effects)</term>
<term>cortical evoked potential</term>
<term>dystonia</term>
<term>pallidal DBS</term>
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<term>Reaction Time</term>
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<term>Dystonic Disorders</term>
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<term>Globus Pallidus</term>
<term>Reaction Time</term>
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<term>Brain Mapping</term>
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<front><div type="abstract" xml:lang="en">Deep brain stimulation (DBS) of globus pallidus internus (GPi) has emerged as an effective treatment for primary generalized dystonia. However, the physiological mechanisms of improvement are not fully understood. Cortical activity in response to pallidal stimulation was recorded in 6 patients with primary generalized dystonia >6 months after bilateral GPi DBS. Scalp electroencephalogram was recorded using 60 surface electrodes during 10 Hz bipolar pallidal DBS at each electrode contact pair. Anatomical position of the electrode contacts in relation to the GPi, medial medullary lamina and globus pallidus externus (GPe) was determined from the postoperative stereotactic MRI. In all six patients an evoked potential (EP) was observed with average onset latency of 10.9 ms ± 0.77, peak latency 26.6 ms ± 1.6, distributed mainly over the ipsilateral hemisphere, maximal centrally. The mean amplitude of this potential was larger with stimulation in posteroventral GPi than in GPe (3.36 μV vs. 0.50 μV, P < 0.0001). The EP was absent in one patient‐side, ipsilateral to a previous thalamotomy. Low frequency GPi stimulation produces an EP distributed centrally over the ipsilateral hemisphere. The latency and distribution of the EP are consistent with stimulation of pallidothalamic neurons projecting to the sensorimotor cortex. Because the EP is larger and more consistently present with stimulation of posteroventral GPi than GPe, it may provide a physiological tool to identify contacts within the optimal surgical target. © 2007 Movement Disorder Society</div>
</front>
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Movement Disorders (revue)

Cortical evoked potentials from pallidal stimulation in patients with primary generalized dystonia

Cortical evoked potentials from pallidal stimulation in patients with primary generalized dystonia

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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