Impaired motor imagery in patients with essential tremor: A case control study
Identifieur interne : 002E02 ( Main/Exploration ); précédent : 002E01; suivant : 002E03Impaired motor imagery in patients with essential tremor: A case control study
Auteurs : Yew-Long Lo [Singapour] ; Elan D. Louis [États-Unis] ; Stephanie Fook-Chong [Singapour] ; Eng-King Tan [Singapour]Source :
- Movement Disorders [ 0885-3185 ] ; 2007-03-15.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
- KwdEn :
- Adult, Aged, Case control study, Case-Control Studies, Essential Tremor (epidemiology), Essential Tremor (physiopathology), Essential Tremor (therapy), Evoked Potentials, Motor (physiology), Female, Human, Humans, Imagery, Imagination, Male, Middle Aged, Motion Perception, Nervous system diseases, Perceptual Disorders (diagnosis), Perceptual Disorders (epidemiology), Perceptual Disorders (therapy), Severity of Illness Index, Transcranial Magnetic Stimulation, Tremor, Upper Extremity (physiopathology), case–control study, essential tremor, motor imagery.
- MESH :
- diagnosis : Perceptual Disorders.
- epidemiology : Essential Tremor, Perceptual Disorders.
- physiology : Evoked Potentials, Motor.
- physiopathology : Essential Tremor, Upper Extremity.
- therapy : Essential Tremor, Perceptual Disorders.
- Adult, Aged, Case-Control Studies, Female, Humans, Imagination, Male, Middle Aged, Motion Perception, Severity of Illness Index, Transcranial Magnetic Stimulation.
Abstract
Motor imagery (MI), which refers to the process of mental representation of movements, has not been studied in patients with essential tremor (ET). We investigated the presence of impaired MI in ET patients compared with healthy controls. A group of drug‐naive and nondemented ET patients and age‐matched controls were studied using transcranial magnetic stimulation, while they were specifically instructed to try and imagine themselves performing two motor tasks. The various clinical and electrophysiological variables were evaluated and compared. Repeated measures ANOVA demonstrated a significant difference between ET patients and controls with respect to mean motor‐evoked potential (MEP) amplitudes (F(1,38) = 31.92, P < 0.005) during MI. The process of MI effectively facilitated MEP amplitude in controls but not in ET patients, regardless of side of stimulation or motor tasks. We provide evidence to demonstrate impairment of MI in a group of ET patients compared with healthy controls. The basis for this novel finding is unclear, and further studies are warranted to determine whether it is related to cerebellar or motor cortical dysfunction. © 2007 Movement Disorder Society
Url:
DOI: 10.1002/mds.21356
Affiliations:
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Le document en format XML
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Louis</name><affiliation wicri:level="4"><country xml:lang="fr">États-Unis</country><wicri:regionArea>G H Sergievsky Center and Department of Neurology, College of Physicians and Surgeons, Columbia University, New York, New York</wicri:regionArea><placeName><region type="state">État de New York</region><settlement type="city">New York</settlement></placeName><orgName type="university">Université Columbia</orgName></affiliation></author><author><name sortKey="Fook Hong, Stephanie" sort="Fook Hong, Stephanie" uniqKey="Fook Hong S" first="Stephanie" last="Fook-Chong">Stephanie Fook-Chong</name><affiliation wicri:level="1"><country xml:lang="fr">Singapour</country><wicri:regionArea>Department of Clinical Research, Singapore General Hospital</wicri:regionArea><wicri:noRegion>Singapore General Hospital</wicri:noRegion></affiliation></author><author><name sortKey="Tan, Eng Ing" sort="Tan, Eng Ing" uniqKey="Tan E" first="Eng-King" last="Tan">Eng-King Tan</name><affiliation wicri:level="1"><country xml:lang="fr">Singapour</country><wicri:regionArea>Department of Neurology, Singapore General Hospital</wicri:regionArea><wicri:noRegion>Singapore General Hospital</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Singapour</country><wicri:regionArea>Department of Neurology, National Neuroscience Institute</wicri:regionArea><wicri:noRegion>National Neuroscience Institute</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Singapour</country><wicri:regionArea>Division of Research, SingHealth</wicri:regionArea><wicri:noRegion>SingHealth</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="2007-03-15">2007-03-15</date><biblScope unit="vol">22</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="504">504</biblScope><biblScope unit="page" to="508">508</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">F05C12B46267C59F26F1BD34472CDD0F42D4A81A</idno><idno type="DOI">10.1002/mds.21356</idno><idno type="ArticleID">MDS21356</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>Case control study</term><term>Case-Control Studies</term><term>Essential Tremor (epidemiology)</term><term>Essential Tremor (physiopathology)</term><term>Essential Tremor (therapy)</term><term>Evoked Potentials, Motor (physiology)</term><term>Female</term><term>Human</term><term>Humans</term><term>Imagery</term><term>Imagination</term><term>Male</term><term>Middle Aged</term><term>Motion Perception</term><term>Nervous system diseases</term><term>Perceptual Disorders (diagnosis)</term><term>Perceptual Disorders (epidemiology)</term><term>Perceptual Disorders (therapy)</term><term>Severity of Illness Index</term><term>Transcranial Magnetic Stimulation</term><term>Tremor</term><term>Upper Extremity (physiopathology)</term><term>case–control study</term><term>essential tremor</term><term>motor imagery</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Perceptual Disorders</term></keywords><keywords scheme="MESH" qualifier="epidemiology" xml:lang="en"><term>Essential Tremor</term><term>Perceptual Disorders</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>Essential Tremor</term><term>Upper Extremity</term></keywords><keywords scheme="MESH" qualifier="therapy" xml:lang="en"><term>Essential Tremor</term><term>Perceptual Disorders</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Case-Control Studies</term><term>Female</term><term>Humans</term><term>Imagination</term><term>Male</term><term>Middle Aged</term><term>Motion Perception</term><term>Severity of Illness Index</term><term>Transcranial Magnetic Stimulation</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Etude cas témoin</term><term>Homme</term><term>Imagerie</term><term>Système nerveux pathologie</term><term>Tremblement</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Homme</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="fr">Motor imagery (MI), which refers to the process of mental representation of movements, has not been studied in patients with essential tremor (ET). We investigated the presence of impaired MI in ET patients compared with healthy controls. A group of drug‐naive and nondemented ET patients and age‐matched controls were studied using transcranial magnetic stimulation, while they were specifically instructed to try and imagine themselves performing two motor tasks. The various clinical and electrophysiological variables were evaluated and compared. Repeated measures ANOVA demonstrated a significant difference between ET patients and controls with respect to mean motor‐evoked potential (MEP) amplitudes (F(1,38) = 31.92, P < 0.005) during MI. The process of MI effectively facilitated MEP amplitude in controls but not in ET patients, regardless of side of stimulation or motor tasks. We provide evidence to demonstrate impairment of MI in a group of ET patients compared with healthy controls. The basis for this novel finding is unclear, and further studies are warranted to determine whether it is related to cerebellar or motor cortical dysfunction. © 2007 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Singapour</li><li>États-Unis</li></country><region><li>État de New York</li></region><settlement><li>New York</li></settlement><orgName><li>Université Columbia</li></orgName></list><tree><country name="Singapour"><noRegion><name sortKey="Lo, Yew Ong" sort="Lo, Yew Ong" uniqKey="Lo Y" first="Yew-Long" last="Lo">Yew-Long Lo</name></noRegion><name sortKey="Fook Hong, Stephanie" sort="Fook Hong, Stephanie" uniqKey="Fook Hong S" first="Stephanie" last="Fook-Chong">Stephanie Fook-Chong</name><name sortKey="Lo, Yew Ong" sort="Lo, Yew Ong" uniqKey="Lo Y" first="Yew-Long" last="Lo">Yew-Long Lo</name><name sortKey="Tan, Eng Ing" sort="Tan, Eng Ing" uniqKey="Tan E" first="Eng-King" last="Tan">Eng-King Tan</name><name sortKey="Tan, Eng Ing" sort="Tan, Eng Ing" uniqKey="Tan E" first="Eng-King" last="Tan">Eng-King Tan</name><name sortKey="Tan, Eng Ing" sort="Tan, Eng Ing" uniqKey="Tan E" first="Eng-King" last="Tan">Eng-King Tan</name></country><country name="États-Unis"><region name="État de New York"><name sortKey="Louis, Elan D" sort="Louis, Elan D" uniqKey="Louis E" first="Elan D." last="Louis">Elan D. Louis</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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