MovDisordV3, Main, Exploration, bibRecord, 004506

Descending control of muscles in patients with cervical dystonia

Identifieur interne : 004506 ( Main/Exploration ); précédent : 004505; suivant : 004507

Descending control of muscles in patients with cervical dystonia

Auteurs : Marina A. J. Tijssen [Royaume-Uni, Pays-Bas] ; Alex Münchau [Royaume-Uni] ; John F. Marsden [Royaume-Uni] ; Andrew Lees (neurologue) [Royaume-Uni] ; Kailash P. Bhatia [Royaume-Uni] ; Peter Brown [Royaume-Uni]

Source :

Movement Disorders [ 0885-3185 ] ; 2002-05.

RBID : ISTEX:91D4E23DF67587E33C72C0D30F575CC860635B97

Descripteurs français

Pascal (Inist)
- Cou, Diagnostic différentiel, Dystonie, Electromyographie, Homme, Muscle angulaire omoplate, Muscle sternocléidomastoïdien, Muscle trapèze, Torticolis.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Adult, Aged, Differential diagnostic, Dystonia, Electromyography, Female, Human, Humans, Levator scapulae muscle, Male, Middle Aged, Neck, Neck Muscles (physiopathology), Posture, Sternocleidomastoid muscle, Torticollis, Torticollis (diagnosis), Torticollis (physiopathology), Trapezius muscle, dystonia, frequency analysis, torticollis.
MESH :
- diagnosis : Torticollis.
- physiopathology : Neck Muscles, Torticollis.
- Adult, Aged, Electromyography, Female, Humans, Male, Middle Aged, Posture.

Abstract

It was reported recently that specific features in the frequency analysis of electromyographic (EMG) activity in the sternocleidomastoid (SCM) and splenius (SPL) muscles were able to distinguish between rotational idiopathic cervical dystonia (CD) and voluntary torticollis in individual subjects. Those with CD showed an abnormal drive to muscles at 5 to 7 Hz and an absence of the normal 10 to 12 Hz peak in the autospectrum of SPL. We sought to determine whether the same abnormalities in the frequency domain are found in complex CD, in which the head is displaced in more than two planes. EMG activity was recorded in the SCM, SPL, trapezius, and levator scapulae muscles bilaterally in 10 patients with complex CD. Frequency analysis of EMG was compared with conventional clinical and polymyographic assessment. The autospectrum of SPL during free dystonic contraction showed an absence of a significant peak at 10 to12 Hz in 8 of the 10 patients. The presence of a 5 to 7 Hz frequency drive showed a significant association with muscle pairs determined as dystonic by means of polymyography (P < 0.005). The neck posture predicted blindly, based on the low‐frequency drive, correlated significantly with the clinical assessment of posture (P < 0.01). Conventional assessment and the results of frequency analysis correlated, suggesting that a low‐frequency drive to neck muscle may be a general feature of simple rotational and more complex cervical dystonia. The pattern of coherence between the EMG in different neck muscles may provide a means of identifying leading dystonic muscles, especially in patients with complex cervical dystonia. © 2002 Movement Disorder Society

Url:

https://api.istex.fr/document/91D4E23DF67587E33C72C0D30F575CC860635B97/fulltext/pdf

DOI: 10.1002/mds.10121

Affiliations:

Le document en format XML

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<term>Electromyography</term>
<term>Female</term>
<term>Human</term>
<term>Humans</term>
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<front><div type="abstract" xml:lang="en">It was reported recently that specific features in the frequency analysis of electromyographic (EMG) activity in the sternocleidomastoid (SCM) and splenius (SPL) muscles were able to distinguish between rotational idiopathic cervical dystonia (CD) and voluntary torticollis in individual subjects. Those with CD showed an abnormal drive to muscles at 5 to 7 Hz and an absence of the normal 10 to 12 Hz peak in the autospectrum of SPL. We sought to determine whether the same abnormalities in the frequency domain are found in complex CD, in which the head is displaced in more than two planes. EMG activity was recorded in the SCM, SPL, trapezius, and levator scapulae muscles bilaterally in 10 patients with complex CD. Frequency analysis of EMG was compared with conventional clinical and polymyographic assessment. The autospectrum of SPL during free dystonic contraction showed an absence of a significant peak at 10 to12 Hz in 8 of the 10 patients. The presence of a 5 to 7 Hz frequency drive showed a significant association with muscle pairs determined as dystonic by means of polymyography (P < 0.005). The neck posture predicted blindly, based on the low‐frequency drive, correlated significantly with the clinical assessment of posture (P < 0.01). Conventional assessment and the results of frequency analysis correlated, suggesting that a low‐frequency drive to neck muscle may be a general feature of simple rotational and more complex cervical dystonia. The pattern of coherence between the EMG in different neck muscles may provide a means of identifying leading dystonic muscles, especially in patients with complex cervical dystonia. © 2002 Movement Disorder Society</div>
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Movement Disorders (revue)

Descending control of muscles in patients with cervical dystonia

Descending control of muscles in patients with cervical dystonia

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

	Movement Disorders (revue)
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.