Task‐dependent intracortical inhibition is impaired in focal hand dystonia
Identifieur interne : 003712 ( Main/Exploration ); précédent : 003711; suivant : 003713Task‐dependent intracortical inhibition is impaired in focal hand dystonia
Auteurs : Cathrin M. Bütefisch [États-Unis, Allemagne] ; Babak Boroojerdi [États-Unis] ; Robert Chen [États-Unis, Canada] ; Fortunato Battaglia [États-Unis] ; Mark Hallett [États-Unis]Source :
- Movement Disorders [ 0885-3185 ] ; 2005-05.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Dystonia, Dystonic Disorders (diagnosis), Dystonic Disorders (physiopathology), Dystonic Disorders (therapy), Electromyography, Feedback, Female, Functional Laterality (physiology), Hand, Hand (physiopathology), Humans, Magnetics (instrumentation), Male, Middle Aged, Nervous system diseases, Neural Inhibition (physiology), Neural Pathways (physiopathology), Psychomotor Performance, Severity of Illness Index, Teaching (methods), Transcranial magnetic stimulation, Visual Perception, dystonia, intracortical inhibition, transcranial magnetic stimulation.
- MESH :
- diagnosis : Dystonic Disorders.
- instrumentation : Magnetics.
- methods : Teaching.
- physiology : Functional Laterality, Neural Inhibition.
- physiopathology : Dystonic Disorders, Hand, Neural Pathways.
- therapy : Dystonic Disorders.
- Electromyography, Feedback, Female, Humans, Male, Middle Aged, Psychomotor Performance, Severity of Illness Index, Visual Perception.
Abstract
We tested whether task‐dependent modulation of inhibition within the motor cortex is impaired in patients with dystonia. Paired‐pulse transcranial magnetic stimulation (TMS) at an interstimulus interval of 2 msec was used to measure the effect of two different tasks on short ISI intracortical inhibition (SICI) in dystonic and normal subjects. In two experiments, SICI of the fourth dorsal interosseus (4DIO) and abductor pollicis brevis (APB) muscles were measured before and at the end of the training task. In the first experiment, subjects performed a nonselective task consisting of abducting the thumb, where the APB acted as agonist and the 4DIO as synergist. In the second experiment, the function of the 4DIO was changed as the subjects were asked to consciously inhibit this muscle while abducting the thumb (selective task). Therefore, while the APB was activated in both tasks, the 4DIO was activated in the nonselective task but was in the inhibitory surround in the selective task. We found that performance of the selective but not the nonselective task resulted in increased SICI in the 4DIO of normal but not in dystonic subjects. We conclude that task‐dependent SICI is disturbed in patients with dystonia. © 2005 Movement Disorder Society
Url:
- https://api.istex.fr/document/12B2478535BBF367268D5B9A6AA81D65E3CACC64/fulltext/pdf
- http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1457024
DOI: 10.1002/mds.20367
Affiliations:
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Le document en format XML
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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="2005-05">2005-05</date><biblScope unit="vol">20</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="545">545</biblScope><biblScope unit="page" to="551">551</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">12B2478535BBF367268D5B9A6AA81D65E3CACC64</idno><idno type="DOI">10.1002/mds.20367</idno><idno type="ArticleID">MDS20367</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Dystonia</term><term>Dystonic Disorders (diagnosis)</term><term>Dystonic Disorders (physiopathology)</term><term>Dystonic Disorders (therapy)</term><term>Electromyography</term><term>Feedback</term><term>Female</term><term>Functional Laterality (physiology)</term><term>Hand</term><term>Hand (physiopathology)</term><term>Humans</term><term>Magnetics (instrumentation)</term><term>Male</term><term>Middle Aged</term><term>Nervous system diseases</term><term>Neural Inhibition (physiology)</term><term>Neural Pathways (physiopathology)</term><term>Psychomotor Performance</term><term>Severity of Illness Index</term><term>Teaching (methods)</term><term>Transcranial magnetic stimulation</term><term>Visual Perception</term><term>dystonia</term><term>intracortical inhibition</term><term>transcranial magnetic stimulation</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Dystonic Disorders</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Magnetics</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Teaching</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Functional Laterality</term><term>Neural Inhibition</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Dystonic Disorders</term><term>Hand</term><term>Neural Pathways</term></keywords><keywords scheme="MESH" qualifier="therapy" xml:lang="en"><term>Dystonic Disorders</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Electromyography</term><term>Feedback</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Psychomotor Performance</term><term>Severity of Illness Index</term><term>Visual Perception</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Dystonie</term><term>Main</term><term>Stimulation magnétique transcrânienne</term><term>Système nerveux pathologie</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We tested whether task‐dependent modulation of inhibition within the motor cortex is impaired in patients with dystonia. Paired‐pulse transcranial magnetic stimulation (TMS) at an interstimulus interval of 2 msec was used to measure the effect of two different tasks on short ISI intracortical inhibition (SICI) in dystonic and normal subjects. In two experiments, SICI of the fourth dorsal interosseus (4DIO) and abductor pollicis brevis (APB) muscles were measured before and at the end of the training task. In the first experiment, subjects performed a nonselective task consisting of abducting the thumb, where the APB acted as agonist and the 4DIO as synergist. In the second experiment, the function of the 4DIO was changed as the subjects were asked to consciously inhibit this muscle while abducting the thumb (selective task). Therefore, while the APB was activated in both tasks, the 4DIO was activated in the nonselective task but was in the inhibitory surround in the selective task. We found that performance of the selective but not the nonselective task resulted in increased SICI in the 4DIO of normal but not in dystonic subjects. We conclude that task‐dependent SICI is disturbed in patients with dystonia. © 2005 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>Canada</li><li>États-Unis</li></country><region><li>Maryland</li></region></list><tree><country name="États-Unis"><region name="Maryland"><name sortKey="Butefisch, Cathrin M" sort="Butefisch, Cathrin M" uniqKey="Butefisch C" first="Cathrin M." last="Bütefisch">Cathrin M. Bütefisch</name></region><name sortKey="Battaglia, Fortunato" sort="Battaglia, Fortunato" uniqKey="Battaglia F" first="Fortunato" last="Battaglia">Fortunato Battaglia</name><name sortKey="Boroojerdi, Babak" sort="Boroojerdi, Babak" uniqKey="Boroojerdi B" first="Babak" last="Boroojerdi">Babak Boroojerdi</name><name sortKey="Chen, Robert" sort="Chen, Robert" uniqKey="Chen R" first="Robert" last="Chen">Robert Chen</name><name sortKey="Hallett, Mark" sort="Hallett, Mark" uniqKey="Hallett M" first="Mark" last="Hallett">Mark Hallett</name></country><country name="Allemagne"><noRegion><name sortKey="Butefisch, Cathrin M" sort="Butefisch, Cathrin M" uniqKey="Butefisch C" first="Cathrin M." last="Bütefisch">Cathrin M. Bütefisch</name></noRegion></country><country name="Canada"><noRegion><name sortKey="Chen, Robert" sort="Chen, Robert" uniqKey="Chen R" first="Robert" last="Chen">Robert Chen</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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