Repetitive magnetic stimulation of cortical motor areas in Parkinson's disease: implications for the pathophysiology of cortical function.
Identifieur interne : 000785 ( Ncbi/Curation ); précédent : 000784; suivant : 000786Repetitive magnetic stimulation of cortical motor areas in Parkinson's disease: implications for the pathophysiology of cortical function.
Auteurs : F. Gilio [Italie] ; A. Currà ; M. Inghilleri ; C. Lorenzano ; M. Manfredi ; Alfredo BerardelliSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2002.
English descriptors
- KwdEn :
- MESH :
- innervation : Forearm.
- physiopathology : Motor Cortex, Parkinson Disease.
- Aged, Electric Stimulation, Electromyography, Evoked Potentials, Motor, Humans, Magnetics, Middle Aged, Motor Neurons, Neural Inhibition.
Abstract
We investigated the neurophysiological and clinical effects of repetitive magnetic stimulation (rTMS) delivered to the cortical motor areas in healthy subjects and patients with Parkinson's disease. rTMS was delivered with a high speed magnetic stimulator (Cadwell, Kennewick, WA) through a figure-eight coil centred on the primary motor area at a stimulus intensity of 120% motor threshold. Trains of 10 stimuli were delivered at frequencies of 5 Hz while subjects were at rest and during a voluntary contraction of the contralateral first dorsal interosseous muscle. In normal subjects at rest, the muscle evoked responses (MEPs) to each stimulus in a train of magnetic stimuli progressively increased in size during the train. rTMS left the MEPs unchanged in patients off therapy and had a small facilitatory effect in those on therapy. In normal subjects and patients, 5-Hz rTMS trains delivered during a voluntary contraction of the target muscle left the MEP unchanged in size. MEPs were followed by a silent period that increased in duration during the course of the train. The silent period duration increased to a similar extent in patients and controls. The reduced rTMS-induced facilitation of MEPs in patients with Parkinson's disease reflects a decreased facilitation of the excitatory cells in the cortical motor areas.
DOI: 10.1002/mds.1255
PubMed: 12112192
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Inghilleri</name></author><author><name sortKey="Lorenzano, C" sort="Lorenzano, C" uniqKey="Lorenzano C" first="C" last="Lorenzano">C. Lorenzano</name></author><author><name sortKey="Manfredi, M" sort="Manfredi, M" uniqKey="Manfredi M" first="M" last="Manfredi">M. Manfredi</name></author><author><name sortKey="Berardelli, Alfredo" sort="Berardelli, Alfredo" uniqKey="Berardelli A" first="Alfredo" last="Berardelli">Alfredo Berardelli</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2002">2002</date><idno type="RBID">pubmed:12112192</idno><idno type="pmid">12112192</idno><idno type="doi">10.1002/mds.1255</idno><idno type="wicri:Area/PubMed/Corpus">003A66</idno><idno type="wicri:Area/PubMed/Curation">003A66</idno><idno type="wicri:Area/PubMed/Checkpoint">003952</idno><idno type="wicri:Area/Ncbi/Merge">000785</idno><idno type="wicri:Area/Ncbi/Curation">000785</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Repetitive magnetic stimulation of cortical motor areas in Parkinson's disease: implications for the pathophysiology of cortical function.</title><author><name sortKey="Gilio, F" sort="Gilio, F" uniqKey="Gilio F" first="F" last="Gilio">F. Gilio</name><affiliation wicri:level="3"><nlm:affiliation>Dipartimento Scienze Neurologiche, Università di Roma La Sapienza, Rome, Italy.</nlm:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>Dipartimento Scienze Neurologiche, Università di Roma La Sapienza, Rome</wicri:regionArea><placeName><settlement type="city">Rome</settlement><region nuts="2">Latium</region></placeName></affiliation></author><author><name sortKey="Curra, A" sort="Curra, A" uniqKey="Curra A" first="A" last="Currà">A. Currà</name></author><author><name sortKey="Inghilleri, M" sort="Inghilleri, M" uniqKey="Inghilleri M" first="M" last="Inghilleri">M. Inghilleri</name></author><author><name sortKey="Lorenzano, C" sort="Lorenzano, C" uniqKey="Lorenzano C" first="C" last="Lorenzano">C. Lorenzano</name></author><author><name sortKey="Manfredi, M" sort="Manfredi, M" uniqKey="Manfredi M" first="M" last="Manfredi">M. Manfredi</name></author><author><name sortKey="Berardelli, Alfredo" sort="Berardelli, Alfredo" uniqKey="Berardelli A" first="Alfredo" last="Berardelli">Alfredo Berardelli</name></author></analytic><series><title level="j">Movement disorders : official journal of the Movement Disorder Society</title><idno type="ISSN">0885-3185</idno><imprint><date when="2002" type="published">2002</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Electric Stimulation</term><term>Electromyography</term><term>Evoked Potentials, Motor</term><term>Forearm (innervation)</term><term>Humans</term><term>Magnetics</term><term>Middle Aged</term><term>Motor Cortex (physiopathology)</term><term>Motor Neurons</term><term>Neural Inhibition</term><term>Parkinson Disease (physiopathology)</term></keywords><keywords scheme="MESH" qualifier="innervation" xml:lang="en"><term>Forearm</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Motor Cortex</term><term>Parkinson Disease</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aged</term><term>Electric Stimulation</term><term>Electromyography</term><term>Evoked Potentials, Motor</term><term>Humans</term><term>Magnetics</term><term>Middle Aged</term><term>Motor Neurons</term><term>Neural Inhibition</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We investigated the neurophysiological and clinical effects of repetitive magnetic stimulation (rTMS) delivered to the cortical motor areas in healthy subjects and patients with Parkinson's disease. rTMS was delivered with a high speed magnetic stimulator (Cadwell, Kennewick, WA) through a figure-eight coil centred on the primary motor area at a stimulus intensity of 120% motor threshold. Trains of 10 stimuli were delivered at frequencies of 5 Hz while subjects were at rest and during a voluntary contraction of the contralateral first dorsal interosseous muscle. In normal subjects at rest, the muscle evoked responses (MEPs) to each stimulus in a train of magnetic stimuli progressively increased in size during the train. rTMS left the MEPs unchanged in patients off therapy and had a small facilitatory effect in those on therapy. In normal subjects and patients, 5-Hz rTMS trains delivered during a voluntary contraction of the target muscle left the MEP unchanged in size. MEPs were followed by a silent period that increased in duration during the course of the train. The silent period duration increased to a similar extent in patients and controls. The reduced rTMS-induced facilitation of MEPs in patients with Parkinson's disease reflects a decreased facilitation of the excitatory cells in the cortical motor areas.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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