Triad stimulation frequency for cortical facilitation in cortical myoclonus
Identifieur interne : 001295 ( Main/Exploration ); précédent : 001294; suivant : 001296Triad stimulation frequency for cortical facilitation in cortical myoclonus
Auteurs : R. Hanajima [Japon] ; Y. Terao [Japon] ; S. Nakatani-Enomoto [Japon] ; S. Okabe [Japon] ; Y. Shirota [Japon] ; S. Oominami [Japon] ; H. Matsumoto [Japon] ; S. Tsuji [Japon] ; Y. Ugawa [Japon]Source :
- Movement Disorders [ 0885-3185 ] ; 2011-03.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Adult, Aged, Analysis of Variance, Biophysics, Case-Control Studies, Electromyography (methods), Evoked Potentials, Motor (physiology), Facilitation, Female, Humans, Male, Middle Aged, Motor Cortex (physiopathology), Motor evoked potential, Myoclonus, Myoclonus (pathology), Myoclonus (physiopathology), Nervous system diseases, Time Factors, Transcranial Magnetic Stimulation (classification), Transcranial Magnetic Stimulation (methods), Transcranial magnetic stimulation, beta band, cortical intrinsic rhythm, gamma band, motor evoked potentials, transcranial magnetic stimulation.
- MESH :
- classification : Transcranial Magnetic Stimulation.
- methods : Electromyography, Transcranial Magnetic Stimulation.
- pathology : Myoclonus.
- physiology : Evoked Potentials, Motor.
- physiopathology : Motor Cortex, Myoclonus.
- Adult, Aged, Analysis of Variance, Biophysics, Case-Control Studies, Female, Humans, Male, Middle Aged, Time Factors.
Abstract
Background:: Abnormally enhanced cortical rhythmic activities have been reported in patients with cortical myoclonus. We recently reported a new triad‐conditioning transcranial magnetic stimulation (TMS) method to detect the intrinsic rhythms of the primary motor cortex (M1). Triad‐conditioning TMS revealed a 40‐Hz intrinsic rhythm of M1 in normal subjects. In this investigation, we study the motor cortical facilitation induced by rhythmic triple TMS pulses (triad‐conditioning TMS) in patients with cortical myoclonus. Methods:: Subjects were 7 patients with cortical myoclonus (28–74 years old) and 13 healthy volunteers (30–71 years old). Three conditioning stimuli over M1 at the intensity of 110% active motor threshold preceded the test TMS at various interstimulus intervals corresponding to 10–200 Hz. The resulting amplitudes of conditioned motor evoked potentials recorded from the contralateral hand muscle were compared with those evoked by the test stimulus alone. Results:: The facilitation at 25 ms (40 Hz) observed in normal subjects was absent in patients with cortical myoclonus. Instead, triad‐conditioning TMS induced facilitation at a 40 ms interval (25 Hz) in cortical myoclonus. Discussions:: This change in the timing of facilitation may be explained by a shift of the most preferential intrinsic rhythm of M1, or by some dysfunction in the interneuronal network in cortical myoclonus. © 2011 Movement Disorder Society
Url:
DOI: 10.1002/mds.23539
Affiliations:
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Nakatani-Enomoto</name><affiliation wicri:level="3"><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Neurology, Division of Neuroscience, Graduate School of Medicine, the University of Tokyo, Tokyo</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement></placeName></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Neurology, Fukushima Medical University, Fukushima</wicri:regionArea><wicri:noRegion>Fukushima</wicri:noRegion></affiliation></author><author><name sortKey="Okabe, S" sort="Okabe, S" uniqKey="Okabe S" first="S." last="Okabe">S. Okabe</name><affiliation wicri:level="3"><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Neurology, Division of Neuroscience, Graduate School of Medicine, the University of Tokyo, Tokyo</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement></placeName></affiliation></author><author><name sortKey="Shirota, Y" sort="Shirota, Y" uniqKey="Shirota Y" first="Y." last="Shirota">Y. Shirota</name><affiliation wicri:level="3"><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Neurology, Division of Neuroscience, Graduate School of Medicine, the University of Tokyo, Tokyo</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement></placeName></affiliation></author><author><name sortKey="Oominami, S" sort="Oominami, S" uniqKey="Oominami S" first="S." last="Oominami">S. 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Ugawa</name><affiliation wicri:level="3"><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Neurology, Division of Neuroscience, Graduate School of Medicine, the University of Tokyo, Tokyo</wicri:regionArea><placeName><settlement type="city">Tokyo</settlement></placeName></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Japon</country><wicri:regionArea>Department of Neurology, Fukushima Medical University, Fukushima</wicri:regionArea><wicri:noRegion>Fukushima</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Movement Disorders</title><title level="j" type="abbrev">Mov. Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2011-03">2011-03</date><biblScope unit="vol">26</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="685">685</biblScope><biblScope unit="page" to="690">690</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">1BBAB42D1C2160D11D8D0CBF882B610C3E1D94CD</idno><idno type="DOI">10.1002/mds.23539</idno><idno type="ArticleID">MDS23539</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Analysis of Variance</term><term>Biophysics</term><term>Case-Control Studies</term><term>Electromyography (methods)</term><term>Evoked Potentials, Motor (physiology)</term><term>Facilitation</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Motor Cortex (physiopathology)</term><term>Motor evoked potential</term><term>Myoclonus</term><term>Myoclonus (pathology)</term><term>Myoclonus (physiopathology)</term><term>Nervous system diseases</term><term>Time Factors</term><term>Transcranial Magnetic Stimulation (classification)</term><term>Transcranial Magnetic Stimulation (methods)</term><term>Transcranial magnetic stimulation</term><term>beta band</term><term>cortical intrinsic rhythm</term><term>gamma band</term><term>motor evoked potentials</term><term>transcranial magnetic stimulation</term></keywords><keywords scheme="MESH" qualifier="classification" xml:lang="en"><term>Transcranial Magnetic Stimulation</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Electromyography</term><term>Transcranial Magnetic Stimulation</term></keywords><keywords scheme="MESH" qualifier="pathology" xml:lang="en"><term>Myoclonus</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Evoked Potentials, Motor</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Motor Cortex</term><term>Myoclonus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Analysis of Variance</term><term>Biophysics</term><term>Case-Control Studies</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Time Factors</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Facilitation</term><term>Myoclonie</term><term>Pathologie du système nerveux</term><term>Potentiel évoqué moteur</term><term>Stimulation magnétique transcrânienne</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Background:: Abnormally enhanced cortical rhythmic activities have been reported in patients with cortical myoclonus. We recently reported a new triad‐conditioning transcranial magnetic stimulation (TMS) method to detect the intrinsic rhythms of the primary motor cortex (M1). Triad‐conditioning TMS revealed a 40‐Hz intrinsic rhythm of M1 in normal subjects. In this investigation, we study the motor cortical facilitation induced by rhythmic triple TMS pulses (triad‐conditioning TMS) in patients with cortical myoclonus. Methods:: Subjects were 7 patients with cortical myoclonus (28–74 years old) and 13 healthy volunteers (30–71 years old). Three conditioning stimuli over M1 at the intensity of 110% active motor threshold preceded the test TMS at various interstimulus intervals corresponding to 10–200 Hz. The resulting amplitudes of conditioned motor evoked potentials recorded from the contralateral hand muscle were compared with those evoked by the test stimulus alone. Results:: The facilitation at 25 ms (40 Hz) observed in normal subjects was absent in patients with cortical myoclonus. Instead, triad‐conditioning TMS induced facilitation at a 40 ms interval (25 Hz) in cortical myoclonus. Discussions:: This change in the timing of facilitation may be explained by a shift of the most preferential intrinsic rhythm of M1, or by some dysfunction in the interneuronal network in cortical myoclonus. © 2011 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Japon</li></country><settlement><li>Tokyo</li></settlement></list><tree><country name="Japon"><noRegion><name sortKey="Hanajima, R" sort="Hanajima, R" uniqKey="Hanajima R" first="R." last="Hanajima">R. Hanajima</name></noRegion><name sortKey="Matsumoto, H" sort="Matsumoto, H" uniqKey="Matsumoto H" first="H." last="Matsumoto">H. Matsumoto</name><name sortKey="Nakatani Nomoto, S" sort="Nakatani Nomoto, S" uniqKey="Nakatani Nomoto S" first="S." last="Nakatani-Enomoto">S. Nakatani-Enomoto</name><name sortKey="Nakatani Nomoto, S" sort="Nakatani Nomoto, S" uniqKey="Nakatani Nomoto S" first="S." last="Nakatani-Enomoto">S. Nakatani-Enomoto</name><name sortKey="Okabe, S" sort="Okabe, S" uniqKey="Okabe S" first="S." last="Okabe">S. Okabe</name><name sortKey="Oominami, S" sort="Oominami, S" uniqKey="Oominami S" first="S." last="Oominami">S. Oominami</name><name sortKey="Shirota, Y" sort="Shirota, Y" uniqKey="Shirota Y" first="Y." last="Shirota">Y. Shirota</name><name sortKey="Terao, Y" sort="Terao, Y" uniqKey="Terao Y" first="Y." last="Terao">Y. Terao</name><name sortKey="Tsuji, S" sort="Tsuji, S" uniqKey="Tsuji S" first="S." last="Tsuji">S. Tsuji</name><name sortKey="Ugawa, Y" sort="Ugawa, Y" uniqKey="Ugawa Y" first="Y." last="Ugawa">Y. Ugawa</name><name sortKey="Ugawa, Y" sort="Ugawa, Y" uniqKey="Ugawa Y" first="Y." last="Ugawa">Y. Ugawa</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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