Movement Disorders (revue)

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Short-term cortical plasticity in patients with dystonia : A study with repetitive transcranial magnetic stimulation

Identifieur interne : 001592 ( PascalFrancis/Corpus ); précédent : 001591; suivant : 001593

Short-term cortical plasticity in patients with dystonia : A study with repetitive transcranial magnetic stimulation

Auteurs : Francesca Gilio ; Antonio Suppa ; Matteo Bologna ; Cinzia Lorenzano ; Giovanni Fabbrini ; Alfredo Berardelli

Source :

RBID : Pascal:07-0393264

Descripteurs français

English descriptors

Abstract

Repetitive transcranial magnetic stimulation (rTMS) delivered at 5 Hz frequency and suprathreshold (RMT) intensity produces a progressive facilitation of motor-evoked potential (MEP) amplitude that outlasts the end of stimulation. This phenomenon is related to a short-term enhancement of cortical excitatory interneurones. In this study, we investigated whether 5 Hz-rTMS elicits similar MEP facilitation during stimulation and similar facilitatory after-effects in patients with upper limb dystonia and healthy subjects. Trains of 5, 10, and 20 stimuli were delivered at 120% RMT over the primary motor cortex with the subjects at rest. rTMS-trains were followed by single test stimuli delivered at various interstimulus intervals (0.5-10 s) at 120% RMT using a conditioning-test paradigm. Single conditioning stimuli were also delivered. The effects of suprathreshold 1 Hz-rTMS were also tested. The MEP amplitude during the course of the trains and of the test stimuli was measured. In control experiments, we investigated the role of the afferent inputs elicited by muscle twitches after ulnar nerve stimulation on the MEP amplitude. In patients and healthy subjects, MEP amplitude increased significantly during the course of 5 Hz-trains. In both groups the MEP facilitation outlasted the end of 5 Hz-rTMS, however the facilitatory after-effects were more pronounced and lasted longer in patients than in healthy subjects. MEP amplitudes during and after 1 Hz-rTMS remained unchanged. Ulnar nerve stimulation did not change the test MEP amplitude. We conclude that in patients with upper limb dystonia there is an abnormal recovery from MEP facilitation after suprathreshold 5 Hz-rTMS suggesting an abnormal pattern of short-term cortical plasticity.

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Pour connaître la documentation sur le format Inist Standard.

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A03   1    @0 Mov. disord.
A05       @2 22
A06       @2 10
A08 01  1  ENG  @1 Short-term cortical plasticity in patients with dystonia : A study with repetitive transcranial magnetic stimulation
A11 01  1    @1 GILIO (Francesca)
A11 02  1    @1 SUPPA (Antonio)
A11 03  1    @1 BOLOGNA (Matteo)
A11 04  1    @1 LORENZANO (Cinzia)
A11 05  1    @1 FABBRINI (Giovanni)
A11 06  1    @1 BERARDELLI (Alfredo)
A14 01      @1 Department of Neurological Sciences and Neuromed Institute (IRCCS), University of Rome "La Sapienza" @2 Rome @3 ITA @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 4 aut. @Z 5 aut. @Z 6 aut.
A20       @1 1436-1443
A21       @1 2007
A23 01      @0 ENG
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A44       @0 0000 @1 © 2007 INIST-CNRS. All rights reserved.
A45       @0 33 ref.
A47 01  1    @0 07-0393264
A60       @1 P
A61       @0 A
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C01 01    ENG  @0 Repetitive transcranial magnetic stimulation (rTMS) delivered at 5 Hz frequency and suprathreshold (RMT) intensity produces a progressive facilitation of motor-evoked potential (MEP) amplitude that outlasts the end of stimulation. This phenomenon is related to a short-term enhancement of cortical excitatory interneurones. In this study, we investigated whether 5 Hz-rTMS elicits similar MEP facilitation during stimulation and similar facilitatory after-effects in patients with upper limb dystonia and healthy subjects. Trains of 5, 10, and 20 stimuli were delivered at 120% RMT over the primary motor cortex with the subjects at rest. rTMS-trains were followed by single test stimuli delivered at various interstimulus intervals (0.5-10 s) at 120% RMT using a conditioning-test paradigm. Single conditioning stimuli were also delivered. The effects of suprathreshold 1 Hz-rTMS were also tested. The MEP amplitude during the course of the trains and of the test stimuli was measured. In control experiments, we investigated the role of the afferent inputs elicited by muscle twitches after ulnar nerve stimulation on the MEP amplitude. In patients and healthy subjects, MEP amplitude increased significantly during the course of 5 Hz-trains. In both groups the MEP facilitation outlasted the end of 5 Hz-rTMS, however the facilitatory after-effects were more pronounced and lasted longer in patients than in healthy subjects. MEP amplitudes during and after 1 Hz-rTMS remained unchanged. Ulnar nerve stimulation did not change the test MEP amplitude. We conclude that in patients with upper limb dystonia there is an abnormal recovery from MEP facilitation after suprathreshold 5 Hz-rTMS suggesting an abnormal pattern of short-term cortical plasticity.
C02 01  X    @0 002B17
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C03 01  X  SPA  @0 Sistema nervioso patología @5 01
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C03 07  X  SPA  @0 Potencial evocado motor @5 13
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C03 08  X  ENG  @0 Transcranial magnetic stimulation @4 CD @5 96
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C07 01  X  ENG  @0 Extrapyramidal syndrome @5 37
C07 01  X  SPA  @0 Extrapiramidal síndrome @5 37
C07 02  X  FRE  @0 Mouvement involontaire @5 38
C07 02  X  ENG  @0 Involuntary movement @5 38
C07 02  X  SPA  @0 Movimiento involuntario @5 38
C07 03  X  FRE  @0 Muscle strié pathologie @5 39
C07 03  X  ENG  @0 Striated muscle disease @5 39
C07 03  X  SPA  @0 Músculo estriado patología @5 39
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Format Inist (serveur)

NO : PASCAL 07-0393264 INIST
ET : Short-term cortical plasticity in patients with dystonia : A study with repetitive transcranial magnetic stimulation
AU : GILIO (Francesca); SUPPA (Antonio); BOLOGNA (Matteo); LORENZANO (Cinzia); FABBRINI (Giovanni); BERARDELLI (Alfredo)
AF : Department of Neurological Sciences and Neuromed Institute (IRCCS), University of Rome "La Sapienza"/Rome/Italie (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut.)
DT : Publication en série; Niveau analytique
SO : Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2007; Vol. 22; No. 10; Pp. 1436-1443; Bibl. 33 ref.
LA : Anglais
EA : Repetitive transcranial magnetic stimulation (rTMS) delivered at 5 Hz frequency and suprathreshold (RMT) intensity produces a progressive facilitation of motor-evoked potential (MEP) amplitude that outlasts the end of stimulation. This phenomenon is related to a short-term enhancement of cortical excitatory interneurones. In this study, we investigated whether 5 Hz-rTMS elicits similar MEP facilitation during stimulation and similar facilitatory after-effects in patients with upper limb dystonia and healthy subjects. Trains of 5, 10, and 20 stimuli were delivered at 120% RMT over the primary motor cortex with the subjects at rest. rTMS-trains were followed by single test stimuli delivered at various interstimulus intervals (0.5-10 s) at 120% RMT using a conditioning-test paradigm. Single conditioning stimuli were also delivered. The effects of suprathreshold 1 Hz-rTMS were also tested. The MEP amplitude during the course of the trains and of the test stimuli was measured. In control experiments, we investigated the role of the afferent inputs elicited by muscle twitches after ulnar nerve stimulation on the MEP amplitude. In patients and healthy subjects, MEP amplitude increased significantly during the course of 5 Hz-trains. In both groups the MEP facilitation outlasted the end of 5 Hz-rTMS, however the facilitatory after-effects were more pronounced and lasted longer in patients than in healthy subjects. MEP amplitudes during and after 1 Hz-rTMS remained unchanged. Ulnar nerve stimulation did not change the test MEP amplitude. We conclude that in patients with upper limb dystonia there is an abnormal recovery from MEP facilitation after suprathreshold 5 Hz-rTMS suggesting an abnormal pattern of short-term cortical plasticity.
CC : 002B17; 002B17H; 002B17F
FD : Système nerveux pathologie; Dystonie; Court terme; Plasticité; Homme; Stimulus répétitif; Potentiel évoqué moteur; Stimulation magnétique transcrânienne
FG : Extrapyramidal syndrome; Mouvement involontaire; Muscle strié pathologie; Trouble neurologique; Electrophysiologie; Encéphale pathologie; Système nerveux central pathologie
ED : Nervous system diseases; Dystonia; Short term; Plasticity; Human; Repetitive stimulus; Motor evoked potential; Transcranial magnetic stimulation
EG : Extrapyramidal syndrome; Involuntary movement; Striated muscle disease; Neurological disorder; Electrophysiology; Cerebral disorder; Central nervous system disease
SD : Sistema nervioso patología; Distonía; Corto plazo; Plasticidad; Hombre; Estímulo repetitivo; Potencial evocado motor
LO : INIST-20953.354000161473330100
ID : 07-0393264

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Pascal:07-0393264

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<div type="abstract" xml:lang="en">Repetitive transcranial magnetic stimulation (rTMS) delivered at 5 Hz frequency and suprathreshold (RMT) intensity produces a progressive facilitation of motor-evoked potential (MEP) amplitude that outlasts the end of stimulation. This phenomenon is related to a short-term enhancement of cortical excitatory interneurones. In this study, we investigated whether 5 Hz-rTMS elicits similar MEP facilitation during stimulation and similar facilitatory after-effects in patients with upper limb dystonia and healthy subjects. Trains of 5, 10, and 20 stimuli were delivered at 120% RMT over the primary motor cortex with the subjects at rest. rTMS-trains were followed by single test stimuli delivered at various interstimulus intervals (0.5-10 s) at 120% RMT using a conditioning-test paradigm. Single conditioning stimuli were also delivered. The effects of suprathreshold 1 Hz-rTMS were also tested. The MEP amplitude during the course of the trains and of the test stimuli was measured. In control experiments, we investigated the role of the afferent inputs elicited by muscle twitches after ulnar nerve stimulation on the MEP amplitude. In patients and healthy subjects, MEP amplitude increased significantly during the course of 5 Hz-trains. In both groups the MEP facilitation outlasted the end of 5 Hz-rTMS, however the facilitatory after-effects were more pronounced and lasted longer in patients than in healthy subjects. MEP amplitudes during and after 1 Hz-rTMS remained unchanged. Ulnar nerve stimulation did not change the test MEP amplitude. We conclude that in patients with upper limb dystonia there is an abnormal recovery from MEP facilitation after suprathreshold 5 Hz-rTMS suggesting an abnormal pattern of short-term cortical plasticity.</div>
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<s0>Repetitive transcranial magnetic stimulation (rTMS) delivered at 5 Hz frequency and suprathreshold (RMT) intensity produces a progressive facilitation of motor-evoked potential (MEP) amplitude that outlasts the end of stimulation. This phenomenon is related to a short-term enhancement of cortical excitatory interneurones. In this study, we investigated whether 5 Hz-rTMS elicits similar MEP facilitation during stimulation and similar facilitatory after-effects in patients with upper limb dystonia and healthy subjects. Trains of 5, 10, and 20 stimuli were delivered at 120% RMT over the primary motor cortex with the subjects at rest. rTMS-trains were followed by single test stimuli delivered at various interstimulus intervals (0.5-10 s) at 120% RMT using a conditioning-test paradigm. Single conditioning stimuli were also delivered. The effects of suprathreshold 1 Hz-rTMS were also tested. The MEP amplitude during the course of the trains and of the test stimuli was measured. In control experiments, we investigated the role of the afferent inputs elicited by muscle twitches after ulnar nerve stimulation on the MEP amplitude. In patients and healthy subjects, MEP amplitude increased significantly during the course of 5 Hz-trains. In both groups the MEP facilitation outlasted the end of 5 Hz-rTMS, however the facilitatory after-effects were more pronounced and lasted longer in patients than in healthy subjects. MEP amplitudes during and after 1 Hz-rTMS remained unchanged. Ulnar nerve stimulation did not change the test MEP amplitude. We conclude that in patients with upper limb dystonia there is an abnormal recovery from MEP facilitation after suprathreshold 5 Hz-rTMS suggesting an abnormal pattern of short-term cortical plasticity.</s0>
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<s0>Músculo estriado patología</s0>
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<s0>Trouble neurologique</s0>
<s5>40</s5>
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<s5>42</s5>
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<s5>42</s5>
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<NO>PASCAL 07-0393264 INIST</NO>
<ET>Short-term cortical plasticity in patients with dystonia : A study with repetitive transcranial magnetic stimulation</ET>
<AU>GILIO (Francesca); SUPPA (Antonio); BOLOGNA (Matteo); LORENZANO (Cinzia); FABBRINI (Giovanni); BERARDELLI (Alfredo)</AU>
<AF>Department of Neurological Sciences and Neuromed Institute (IRCCS), University of Rome "La Sapienza"/Rome/Italie (1 aut., 2 aut., 3 aut., 4 aut., 5 aut., 6 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Movement disorders; ISSN 0885-3185; Etats-Unis; Da. 2007; Vol. 22; No. 10; Pp. 1436-1443; Bibl. 33 ref.</SO>
<LA>Anglais</LA>
<EA>Repetitive transcranial magnetic stimulation (rTMS) delivered at 5 Hz frequency and suprathreshold (RMT) intensity produces a progressive facilitation of motor-evoked potential (MEP) amplitude that outlasts the end of stimulation. This phenomenon is related to a short-term enhancement of cortical excitatory interneurones. In this study, we investigated whether 5 Hz-rTMS elicits similar MEP facilitation during stimulation and similar facilitatory after-effects in patients with upper limb dystonia and healthy subjects. Trains of 5, 10, and 20 stimuli were delivered at 120% RMT over the primary motor cortex with the subjects at rest. rTMS-trains were followed by single test stimuli delivered at various interstimulus intervals (0.5-10 s) at 120% RMT using a conditioning-test paradigm. Single conditioning stimuli were also delivered. The effects of suprathreshold 1 Hz-rTMS were also tested. The MEP amplitude during the course of the trains and of the test stimuli was measured. In control experiments, we investigated the role of the afferent inputs elicited by muscle twitches after ulnar nerve stimulation on the MEP amplitude. In patients and healthy subjects, MEP amplitude increased significantly during the course of 5 Hz-trains. In both groups the MEP facilitation outlasted the end of 5 Hz-rTMS, however the facilitatory after-effects were more pronounced and lasted longer in patients than in healthy subjects. MEP amplitudes during and after 1 Hz-rTMS remained unchanged. Ulnar nerve stimulation did not change the test MEP amplitude. We conclude that in patients with upper limb dystonia there is an abnormal recovery from MEP facilitation after suprathreshold 5 Hz-rTMS suggesting an abnormal pattern of short-term cortical plasticity.</EA>
<CC>002B17; 002B17H; 002B17F</CC>
<FD>Système nerveux pathologie; Dystonie; Court terme; Plasticité; Homme; Stimulus répétitif; Potentiel évoqué moteur; Stimulation magnétique transcrânienne</FD>
<FG>Extrapyramidal syndrome; Mouvement involontaire; Muscle strié pathologie; Trouble neurologique; Electrophysiologie; Encéphale pathologie; Système nerveux central pathologie</FG>
<ED>Nervous system diseases; Dystonia; Short term; Plasticity; Human; Repetitive stimulus; Motor evoked potential; Transcranial magnetic stimulation</ED>
<EG>Extrapyramidal syndrome; Involuntary movement; Striated muscle disease; Neurological disorder; Electrophysiology; Cerebral disorder; Central nervous system disease</EG>
<SD>Sistema nervioso patología; Distonía; Corto plazo; Plasticidad; Hombre; Estímulo repetitivo; Potencial evocado motor</SD>
<LO>INIST-20953.354000161473330100</LO>
<ID>07-0393264</ID>
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