Descending control of muscles in patients with cervical dystonia.
Identifieur interne : 000789 ( Ncbi/Checkpoint ); précédent : 000788; suivant : 000790Descending control of muscles in patients with cervical dystonia.
Auteurs : Marina A J. Tijssen [Royaume-Uni] ; Alex Münchau ; John F. Marsden ; Andrew Lees ; Kailash P. Bhatia ; Peter BrownSource :
- Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2002.
English descriptors
- KwdEn :
- 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 to 12 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.
DOI: 10.1002/mds.10121
PubMed: 12112196
Affiliations:
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M.A.Tijssen@amc.uva.nl</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Sobell Department of Neurophysiology, The Institute of Neurology, Queen Square, London</wicri:regionArea><placeName><settlement type="city">Londres</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Grand Londres</region></placeName></affiliation></author><author><name sortKey="Munchau, Alex" sort="Munchau, Alex" uniqKey="Munchau A" first="Alex" last="Münchau">Alex Münchau</name></author><author><name sortKey="Marsden, John F" sort="Marsden, John F" uniqKey="Marsden J" first="John F" last="Marsden">John F. Marsden</name></author><author><name sortKey="Lees, Andrew" sort="Lees, Andrew" uniqKey="Lees A" first="Andrew" last="Lees">Andrew Lees</name></author><author><name sortKey="Bhatia, Kailash P" sort="Bhatia, Kailash P" uniqKey="Bhatia K" first="Kailash P" last="Bhatia">Kailash P. Bhatia</name></author><author><name sortKey="Brown, Peter" sort="Brown, Peter" uniqKey="Brown P" first="Peter" last="Brown">Peter Brown</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2002">2002</date><idno type="RBID">pubmed:12112196</idno><idno type="pmid">12112196</idno><idno type="doi">10.1002/mds.10121</idno><idno type="wicri:Area/PubMed/Corpus">003A62</idno><idno type="wicri:Area/PubMed/Curation">003A62</idno><idno type="wicri:Area/PubMed/Checkpoint">003B31</idno><idno type="wicri:Area/Ncbi/Merge">000789</idno><idno type="wicri:Area/Ncbi/Curation">000789</idno><idno type="wicri:Area/Ncbi/Checkpoint">000789</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Descending control of muscles in patients with cervical dystonia.</title><author><name sortKey="Tijssen, Marina A J" sort="Tijssen, Marina A J" uniqKey="Tijssen M" first="Marina A J" last="Tijssen">Marina A J. Tijssen</name><affiliation wicri:level="3"><nlm:affiliation>Sobell Department of Neurophysiology, The Institute of Neurology, Queen Square, London, United Kingdom. M.A.Tijssen@amc.uva.nl</nlm:affiliation><country xml:lang="fr">Royaume-Uni</country><wicri:regionArea>Sobell Department of Neurophysiology, The Institute of Neurology, Queen Square, London</wicri:regionArea><placeName><settlement type="city">Londres</settlement><region type="country">Angleterre</region><region type="région" nuts="1">Grand Londres</region></placeName></affiliation></author><author><name sortKey="Munchau, Alex" sort="Munchau, Alex" uniqKey="Munchau A" first="Alex" last="Münchau">Alex Münchau</name></author><author><name sortKey="Marsden, John F" sort="Marsden, John F" uniqKey="Marsden J" first="John F" last="Marsden">John F. Marsden</name></author><author><name sortKey="Lees, Andrew" sort="Lees, Andrew" uniqKey="Lees A" first="Andrew" last="Lees">Andrew Lees</name></author><author><name sortKey="Bhatia, Kailash P" sort="Bhatia, Kailash P" uniqKey="Bhatia K" first="Kailash P" last="Bhatia">Kailash P. Bhatia</name></author><author><name sortKey="Brown, Peter" sort="Brown, Peter" uniqKey="Brown P" first="Peter" last="Brown">Peter Brown</name></author></analytic><series><title level="j">Movement disorders : official journal of the Movement Disorder Society</title><idno type="ISSN">0885-3185</idno><imprint><date when="2002" type="published">2002</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Electromyography</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Neck Muscles (physiopathology)</term><term>Posture</term><term>Torticollis (diagnosis)</term><term>Torticollis (physiopathology)</term></keywords><keywords scheme="MESH" qualifier="diagnosis" xml:lang="en"><term>Torticollis</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Neck Muscles</term><term>Torticollis</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Electromyography</term><term>Female</term><term>Humans</term><term>Male</term><term>Middle Aged</term><term>Posture</term></keywords></textClass></profileDesc></teiHeader><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 to 12 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.</div></front></TEI><affiliations><list><country><li>Royaume-Uni</li></country><region><li>Angleterre</li><li>Grand Londres</li></region><settlement><li>Londres</li></settlement></list><tree><noCountry><name sortKey="Bhatia, Kailash P" sort="Bhatia, Kailash P" uniqKey="Bhatia K" first="Kailash P" last="Bhatia">Kailash P. Bhatia</name><name sortKey="Brown, Peter" sort="Brown, Peter" uniqKey="Brown P" first="Peter" last="Brown">Peter Brown</name><name sortKey="Lees, Andrew" sort="Lees, Andrew" uniqKey="Lees A" first="Andrew" last="Lees">Andrew Lees</name><name sortKey="Marsden, John F" sort="Marsden, John F" uniqKey="Marsden J" first="John F" last="Marsden">John F. Marsden</name><name sortKey="Munchau, Alex" sort="Munchau, Alex" uniqKey="Munchau A" first="Alex" last="Münchau">Alex Münchau</name></noCountry><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Tijssen, Marina A J" sort="Tijssen, Marina A J" uniqKey="Tijssen M" first="Marina A J" last="Tijssen">Marina A J. Tijssen</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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