Myoclonic tremulous movements in multiple system atrophy are a form of cortical myoclonus.
Identifieur interne : 003182 ( PubMed/Corpus ); précédent : 003181; suivant : 003183Myoclonic tremulous movements in multiple system atrophy are a form of cortical myoclonus.
Auteurs : Yasuyuki Okuma ; Kenji Fujishima ; Hideto Miwa ; Hideo Mori ; Yoshikuni MizunoSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2005.
English descriptors
- KwdEn :
- Aged, Cerebellum (pathology), Corpus Striatum (pathology), Corpus Striatum (physiopathology), Electroencephalography, Electromyography (instrumentation), Epilepsies, Myoclonic (diagnosis), Epilepsies, Myoclonic (etiology), Epilepsies, Myoclonic (physiopathology), Female, Humans, Magnetic Resonance Imaging, Male, Median Nerve (physiology), Middle Aged, Multiple System Atrophy (complications), Multiple System Atrophy (pathology), Muscle, Skeletal (physiopathology), Nerve Degeneration (pathology), Pons (pathology), Pons (physiopathology), Prospective Studies, Putamen (pathology), Putamen (physiopathology), Somatosensory Cortex (pathology), Somatosensory Cortex (physiopathology), Substantia Nigra (pathology), Substantia Nigra (physiopathology).
- MESH :
- complications : Multiple System Atrophy.
- diagnosis : Epilepsies, Myoclonic.
- etiology : Epilepsies, Myoclonic.
- instrumentation : Electromyography.
- pathology : Cerebellum, Corpus Striatum, Multiple System Atrophy, Nerve Degeneration, Pons, Putamen, Somatosensory Cortex, Substantia Nigra.
- physiology : Median Nerve.
- physiopathology : Corpus Striatum, Epilepsies, Myoclonic, Muscle, Skeletal, Pons, Putamen, Somatosensory Cortex, Substantia Nigra.
- Aged, Electroencephalography, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Prospective Studies.
Abstract
We prospectively studied the clinical and electrophysiological features of myoclonic tremulous movements in patients with multiple system atrophy (MSA). Among 42 consecutive patients, 12 MSA-p (parkinsonian type) and 3 MSA-c (cerebellar type) patients showed small-amplitude myoclonic movements. These movements occurred in the distal part of the arms and fingers, particularly in posture or during voluntary movements. We conducted detailed electrophysiological studies in 11 patients. Electromyographic recordings showed irregular bursts of brief duration often synchronously involving the antagonistic muscles. Somatosensory evoked responses were slightly enlarged in some patients. Long-latency reflexes were enhanced in 7 patients. A jerk-locked averaging technique revealed premyoclonic cortical potentials in 9 patients. These findings suggest that small-amplitude myoclonic movements in MSA are a form of cortical myoclonus.
DOI: 10.1002/mds.20346
PubMed: 15593313
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pubmed:15593313Le document en format XML
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Mizuno</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2005">2005</date><idno type="doi">10.1002/mds.20346</idno><idno type="RBID">pubmed:15593313</idno><idno type="pmid">15593313</idno><idno type="wicri:Area/PubMed/Corpus">003182</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Myoclonic tremulous movements in multiple system atrophy are a form of cortical myoclonus.</title><author><name sortKey="Okuma, Yasuyuki" sort="Okuma, Yasuyuki" uniqKey="Okuma Y" first="Yasuyuki" last="Okuma">Yasuyuki Okuma</name><affiliation><nlm:affiliation>Department of Neurology, Juntendo University Izu-Nagaoka Hospital, Shizuoka, Japan. sgz02202@nifty.ne.jp</nlm:affiliation></affiliation></author><author><name sortKey="Fujishima, Kenji" sort="Fujishima, Kenji" uniqKey="Fujishima K" first="Kenji" last="Fujishima">Kenji Fujishima</name></author><author><name sortKey="Miwa, Hideto" sort="Miwa, Hideto" uniqKey="Miwa H" first="Hideto" last="Miwa">Hideto Miwa</name></author><author><name sortKey="Mori, Hideo" sort="Mori, Hideo" uniqKey="Mori H" first="Hideo" last="Mori">Hideo Mori</name></author><author><name sortKey="Mizuno, Yoshikuni" sort="Mizuno, Yoshikuni" uniqKey="Mizuno Y" first="Yoshikuni" last="Mizuno">Yoshikuni Mizuno</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="2005" type="published">2005</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aged</term><term>Cerebellum (pathology)</term><term>Corpus Striatum (pathology)</term><term>Corpus Striatum (physiopathology)</term><term>Electroencephalography</term><term>Electromyography (instrumentation)</term><term>Epilepsies, Myoclonic (diagnosis)</term><term>Epilepsies, Myoclonic (etiology)</term><term>Epilepsies, Myoclonic (physiopathology)</term><term>Female</term><term>Humans</term><term>Magnetic Resonance Imaging</term><term>Male</term><term>Median Nerve (physiology)</term><term>Middle Aged</term><term>Multiple System Atrophy (complications)</term><term>Multiple System Atrophy (pathology)</term><term>Muscle, Skeletal (physiopathology)</term><term>Nerve Degeneration (pathology)</term><term>Pons (pathology)</term><term>Pons (physiopathology)</term><term>Prospective Studies</term><term>Putamen (pathology)</term><term>Putamen (physiopathology)</term><term>Somatosensory Cortex (pathology)</term><term>Somatosensory Cortex (physiopathology)</term><term>Substantia Nigra (pathology)</term><term>Substantia Nigra (physiopathology)</term></keywords><keywords scheme="MESH" qualifier="complications" xml:lang="en"><term>Multiple System Atrophy</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Epilepsies, Myoclonic</term></keywords><keywords scheme="MESH" qualifier="etiology" 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Imaging</term><term>Male</term><term>Middle Aged</term><term>Prospective Studies</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We prospectively studied the clinical and electrophysiological features of myoclonic tremulous movements in patients with multiple system atrophy (MSA). Among 42 consecutive patients, 12 MSA-p (parkinsonian type) and 3 MSA-c (cerebellar type) patients showed small-amplitude myoclonic movements. These movements occurred in the distal part of the arms and fingers, particularly in posture or during voluntary movements. We conducted detailed electrophysiological studies in 11 patients. Electromyographic recordings showed irregular bursts of brief duration often synchronously involving the antagonistic muscles. Somatosensory evoked responses were slightly enlarged in some patients. Long-latency reflexes were enhanced in 7 patients. A jerk-locked averaging technique revealed premyoclonic cortical potentials in 9 patients. These findings suggest that small-amplitude myoclonic movements in MSA are a form of cortical myoclonus.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">15593313</PMID><DateCreated><Year>2005</Year><Month>04</Month><Day>13</Day></DateCreated><DateCompleted><Year>2005</Year><Month>08</Month><Day>25</Day></DateCompleted><Article PubModel="Print"><Journal><ISSN IssnType="Print">0885-3185</ISSN><JournalIssue CitedMedium="Print"><Volume>20</Volume><Issue>4</Issue><PubDate><Year>2005</Year><Month>Apr</Month></PubDate></JournalIssue><Title>Movement disorders : official journal of the Movement Disorder Society</Title><ISOAbbreviation>Mov. Disord.</ISOAbbreviation></Journal><ArticleTitle>Myoclonic tremulous movements in multiple system atrophy are a form of cortical myoclonus.</ArticleTitle><Pagination><MedlinePgn>451-6</MedlinePgn></Pagination><Abstract><AbstractText>We prospectively studied the clinical and electrophysiological features of myoclonic tremulous movements in patients with multiple system atrophy (MSA). Among 42 consecutive patients, 12 MSA-p (parkinsonian type) and 3 MSA-c (cerebellar type) patients showed small-amplitude myoclonic movements. These movements occurred in the distal part of the arms and fingers, particularly in posture or during voluntary movements. We conducted detailed electrophysiological studies in 11 patients. Electromyographic recordings showed irregular bursts of brief duration often synchronously involving the antagonistic muscles. Somatosensory evoked responses were slightly enlarged in some patients. Long-latency reflexes were enhanced in 7 patients. A jerk-locked averaging technique revealed premyoclonic cortical potentials in 9 patients. 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ValidYN="Y"><LastName>Mizuno</LastName><ForeName>Yoshikuni</ForeName><Initials>Y</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Mov Disord</MedlineTA><NlmUniqueID>8610688</NlmUniqueID><ISSNLinking>0885-3185</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000368">Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D002531">Cerebellum</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000473">pathology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D003342">Corpus Striatum</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000473">pathology</QualifierName><QualifierName MajorTopicYN="N" 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