Corticospinal excitability during motor imagery of a simple tonic finger movement in patients with writer's cramp
Identifieur interne : 003965 ( Main/Exploration ); précédent : 003964; suivant : 003966Corticospinal excitability during motor imagery of a simple tonic finger movement in patients with writer's cramp
Auteurs : Angelo Quartarone [Italie] ; Sergio Bagnato [Italie] ; Vincenzo Rizzo [Italie] ; Francesca Morgante [Italie] ; Antonino Sant'Angelo [Italie] ; Domenica Crupi [Italie] ; Marcello Romano [Italie] ; Corrado Messina [Italie] ; Alfredo Berardelli [Italie] ; Paolo Girlanda [Italie]Source :
- Movement Disorders [ 0885-3185 ] ; 2005-11.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Homme.
English descriptors
- KwdEn :
- Adult, Aged, Dystonia, Dystonic Disorders (physiopathology), Electromyography (methods), Evoked Potentials, Motor (physiology), Excitability, Female, Finger, Fingers (physiopathology), Functional Laterality, Human, Humans, Imagery, Imagination (physiology), Male, Middle Aged, Motor Cortex (physiopathology), Movement (physiology), Nervous system diseases, Pyramidal Tracts (physiopathology), Transcranial magnetic stimulation, Writer cramp, dystonia, motor imagery, transcranial magnetic stimulation (TMS), writer's cramp.
- MESH :
- methods : Electromyography.
- physiology : Evoked Potentials, Motor, Imagination, Movement.
- physiopathology : Dystonic Disorders, Fingers, Motor Cortex, Pyramidal Tracts.
- Adult, Aged, Female, Functional Laterality, Humans, Male, Middle Aged.
Abstract
Motor imagery (MI) is the mental rehearsal of a motor act without overt movement. Using transcranial magnetic stimulation (TMS), we tested the effect of MI on corticospinal excitability in patients with writer's cramp. In 10 patients with writer's cramp and 10 healthy controls, we applied focal TMS over each primary motor area and recorded motor evoked potentials (MEPs) from contralateral hand and arm muscles while participants imagined a tonic abduction of the index finger contralateral to the stimulated hemisphere. In healthy controls and patients, the MEP amplitude in the relaxed first dorsal interosseus muscle (FDI) showed a muscle‐specific increase during MI; however, the increase was less pronounced in patients than in healthy controls. In addition, in patients but not in controls, the MEP amplitude also increased in hand and forearm muscles not involved in the imagined movement. This abnormal spread of facilitation was observed in the affected and unaffected upper limb. MI of simple hand movements is less efficient and less focussed in patients with writer's cramp than it is in normal subjects. © 2005 Movement Disorder Society
Url:
DOI: 10.1002/mds.20626
Affiliations:
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Using transcranial magnetic stimulation (TMS), we tested the effect of MI on corticospinal excitability in patients with writer's cramp. In 10 patients with writer's cramp and 10 healthy controls, we applied focal TMS over each primary motor area and recorded motor evoked potentials (MEPs) from contralateral hand and arm muscles while participants imagined a tonic abduction of the index finger contralateral to the stimulated hemisphere. In healthy controls and patients, the MEP amplitude in the relaxed first dorsal interosseus muscle (FDI) showed a muscle‐specific increase during MI; however, the increase was less pronounced in patients than in healthy controls. In addition, in patients but not in controls, the MEP amplitude also increased in hand and forearm muscles not involved in the imagined movement. This abnormal spread of facilitation was observed in the affected and unaffected upper limb. MI of simple hand movements is less efficient and less focussed in patients with writer's cramp than it is in normal subjects. © 2005 Movement Disorder Society</div></front></TEI><affiliations><list><country><li>Italie</li></country></list><tree><country name="Italie"><noRegion><name sortKey="Quartarone, Angelo" sort="Quartarone, Angelo" uniqKey="Quartarone A" first="Angelo" last="Quartarone">Angelo Quartarone</name></noRegion><name sortKey="Bagnato, Sergio" sort="Bagnato, Sergio" uniqKey="Bagnato S" first="Sergio" last="Bagnato">Sergio Bagnato</name><name sortKey="Bagnato, Sergio" sort="Bagnato, Sergio" uniqKey="Bagnato S" first="Sergio" last="Bagnato">Sergio Bagnato</name><name sortKey="Berardelli, Alfredo" sort="Berardelli, Alfredo" uniqKey="Berardelli A" first="Alfredo" last="Berardelli">Alfredo Berardelli</name><name sortKey="Crupi, Domenica" sort="Crupi, Domenica" uniqKey="Crupi D" first="Domenica" last="Crupi">Domenica Crupi</name><name sortKey="Girlanda, Paolo" sort="Girlanda, Paolo" uniqKey="Girlanda P" first="Paolo" last="Girlanda">Paolo Girlanda</name><name sortKey="Messina, Corrado" sort="Messina, Corrado" uniqKey="Messina C" first="Corrado" last="Messina">Corrado Messina</name><name sortKey="Morgante, Francesca" sort="Morgante, Francesca" uniqKey="Morgante F" first="Francesca" last="Morgante">Francesca Morgante</name><name sortKey="Rizzo, Vincenzo" sort="Rizzo, Vincenzo" uniqKey="Rizzo V" first="Vincenzo" last="Rizzo">Vincenzo Rizzo</name><name sortKey="Romano, Marcello" sort="Romano, Marcello" uniqKey="Romano M" first="Marcello" last="Romano">Marcello Romano</name><name sortKey="Sant Angelo, Antonino" sort="Sant Angelo, Antonino" uniqKey="Sant Angelo A" first="Antonino" last="Sant'Angelo">Antonino Sant'Angelo</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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