Bilateral mirror writing movements (mirror dystonia) in a patient with writer's cramp: functional correlates.
Identifieur interne : 002D91 ( PubMed/Corpus ); précédent : 002D90; suivant : 002D92Bilateral mirror writing movements (mirror dystonia) in a patient with writer's cramp: functional correlates.
Auteurs : Marcelo Merello ; Silvina Carpintiero ; Angel Cammarota ; Francisco Meli ; Ramon LeiguardaSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2006.
English descriptors
- KwdEn :
- MESH :
- chemical , blood : Oxygen.
- blood supply : Motor Cortex.
- methods : Electromyography, Magnetic Resonance Imaging.
- physiopathology : Dystonic Disorders, Motor Cortex.
- Dominance, Cerebral, Female, Humans, Middle Aged.
Abstract
A recent prospective analysis on writer's cramp showed that up to 44.6% of patients in a series of 65 presented mirror dystonia, defined as involuntary movements of the resting hand, abnormal posture, tremor, and jerks occurring while writing with the opposite hand. A clinical case is presented, with videotape evidence of right-handed writer's cramp, with mirror movements elicited while writing using either hand. Functional magnetic resonance imaging studies are compared both to those of a normal patient and to those from a patient with writer's cramp but lacking mirror dystonia. Widespread bilateral activation of cortical motor areas contralateral to the mirror movements in patients with writer's cramp and mirror movements suggests, that bilateral activation of the primary motor cortex may account for the appearance of these mirror movements. Further studies need to be conducted to determine whether mirror movements in dystonic patients appear as a result of loss of intra- and/or interhemispheric cortical inhibition or are simply a consequence of the sustained effort these patients need to exert while writing using a dystonic hand.
DOI: 10.1002/mds.20736
PubMed: 16342284
Links to Exploration step
pubmed:16342284Le document en format XML
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<author><name sortKey="Merello, Marcelo" sort="Merello, Marcelo" uniqKey="Merello M" first="Marcelo" last="Merello">Marcelo Merello</name>
<affiliation><nlm:affiliation>Movement Disorders Section, Raul Carrea Institute for Neurological Research FLENI, Buenos Aires, Argentina. mmerello@fleni.org.ar</nlm:affiliation>
</affiliation>
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<author><name sortKey="Carpintiero, Silvina" sort="Carpintiero, Silvina" uniqKey="Carpintiero S" first="Silvina" last="Carpintiero">Silvina Carpintiero</name>
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<author><name sortKey="Cammarota, Angel" sort="Cammarota, Angel" uniqKey="Cammarota A" first="Angel" last="Cammarota">Angel Cammarota</name>
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<author><name sortKey="Meli, Francisco" sort="Meli, Francisco" uniqKey="Meli F" first="Francisco" last="Meli">Francisco Meli</name>
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<author><name sortKey="Leiguarda, Ramon" sort="Leiguarda, Ramon" uniqKey="Leiguarda R" first="Ramon" last="Leiguarda">Ramon Leiguarda</name>
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<author><name sortKey="Merello, Marcelo" sort="Merello, Marcelo" uniqKey="Merello M" first="Marcelo" last="Merello">Marcelo Merello</name>
<affiliation><nlm:affiliation>Movement Disorders Section, Raul Carrea Institute for Neurological Research FLENI, Buenos Aires, Argentina. mmerello@fleni.org.ar</nlm:affiliation>
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<author><name sortKey="Carpintiero, Silvina" sort="Carpintiero, Silvina" uniqKey="Carpintiero S" first="Silvina" last="Carpintiero">Silvina Carpintiero</name>
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<author><name sortKey="Meli, Francisco" sort="Meli, Francisco" uniqKey="Meli F" first="Francisco" last="Meli">Francisco Meli</name>
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<author><name sortKey="Leiguarda, Ramon" sort="Leiguarda, Ramon" uniqKey="Leiguarda R" first="Ramon" last="Leiguarda">Ramon Leiguarda</name>
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<series><title level="j">Movement disorders : official journal of the Movement Disorder Society</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Dominance, Cerebral</term>
<term>Dystonic Disorders (physiopathology)</term>
<term>Electromyography (methods)</term>
<term>Female</term>
<term>Humans</term>
<term>Magnetic Resonance Imaging (methods)</term>
<term>Middle Aged</term>
<term>Motor Cortex (blood supply)</term>
<term>Motor Cortex (physiopathology)</term>
<term>Oxygen (blood)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="blood" xml:lang="en"><term>Oxygen</term>
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<front><div type="abstract" xml:lang="en">A recent prospective analysis on writer's cramp showed that up to 44.6% of patients in a series of 65 presented mirror dystonia, defined as involuntary movements of the resting hand, abnormal posture, tremor, and jerks occurring while writing with the opposite hand. A clinical case is presented, with videotape evidence of right-handed writer's cramp, with mirror movements elicited while writing using either hand. Functional magnetic resonance imaging studies are compared both to those of a normal patient and to those from a patient with writer's cramp but lacking mirror dystonia. Widespread bilateral activation of cortical motor areas contralateral to the mirror movements in patients with writer's cramp and mirror movements suggests, that bilateral activation of the primary motor cortex may account for the appearance of these mirror movements. Further studies need to be conducted to determine whether mirror movements in dystonic patients appear as a result of loss of intra- and/or interhemispheric cortical inhibition or are simply a consequence of the sustained effort these patients need to exert while writing using a dystonic hand.</div>
</front>
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<Month>10</Month>
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<DateRevised><Year>2013</Year>
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<Title>Movement disorders : official journal of the Movement Disorder Society</Title>
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<Abstract><AbstractText>A recent prospective analysis on writer's cramp showed that up to 44.6% of patients in a series of 65 presented mirror dystonia, defined as involuntary movements of the resting hand, abnormal posture, tremor, and jerks occurring while writing with the opposite hand. A clinical case is presented, with videotape evidence of right-handed writer's cramp, with mirror movements elicited while writing using either hand. Functional magnetic resonance imaging studies are compared both to those of a normal patient and to those from a patient with writer's cramp but lacking mirror dystonia. Widespread bilateral activation of cortical motor areas contralateral to the mirror movements in patients with writer's cramp and mirror movements suggests, that bilateral activation of the primary motor cortex may account for the appearance of these mirror movements. Further studies need to be conducted to determine whether mirror movements in dystonic patients appear as a result of loss of intra- and/or interhemispheric cortical inhibition or are simply a consequence of the sustained effort these patients need to exert while writing using a dystonic hand.</AbstractText>
<CopyrightInformation>Copyright (c) 2005 Movement Disorder Society.</CopyrightInformation>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Merello</LastName>
<ForeName>Marcelo</ForeName>
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<AffiliationInfo><Affiliation>Movement Disorders Section, Raul Carrea Institute for Neurological Research FLENI, Buenos Aires, Argentina. mmerello@fleni.org.ar</Affiliation>
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<CommentsCorrectionsList><CommentsCorrections RefType="CommentIn"><RefSource>Mov Disord. 2007 Jan;22(1):149</RefSource>
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<QualifierName MajorTopicYN="N" UI="Q000503">physiopathology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName MajorTopicYN="N" UI="D010100">Oxygen</DescriptorName>
<QualifierName MajorTopicYN="N" UI="Q000097">blood</QualifierName>
</MeshHeading>
</MeshHeadingList>
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