Complex mechanisms of sensory tricks in cervical dystonia
Identifieur interne : 000396 ( Main/Exploration ); précédent : 000395; suivant : 000397Complex mechanisms of sensory tricks in cervical dystonia
Auteurs : Axel Schramm [Allemagne] ; Karlheinz Reiners [Allemagne] ; Markus Naumann [Allemagne]Source :
- Movement Disorders [ 0885-3185 ] ; 2004-04.
English descriptors
Abstract
Muscle activities in 26 patients with predominantly rotational torticollis were quantified using surface electromyography. In the subgroup of 19 patients with an effective sensory trick, different modes and bilateral locations of trick application led to significant (P < 0.002) reduction of electromyographic (EMG) activity. A strong correlation was found between the efficacy of trick manoeuvres and the starting head position. Trick application in a neutral or even contralateral position was most effective while no reduction of muscle activity during trick application at the maximum dystonic head position was found (P < 0.001). We propose a two‐phase model: First, normalisation of head posture is obtained by counterpressure or volitional antagonistic muscle activity. In a second step, this position can be stabilised using sensory tricks challenging central adaption of distorted sensorimotor integration. © 2003 Movement Disorder Society
Url:
DOI: 10.1002/mds.10689
Affiliations:
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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="2004-04">2004-04</date><biblScope unit="volume">19</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="452">452</biblScope><biblScope unit="page" to="458">458</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">0D56E89BBB15C21E80519ED77B1276D47D7BD3E7</idno><idno type="DOI">10.1002/mds.10689</idno><idno type="ArticleID">MDS10689</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>cervical dystonia</term><term>gèste antagonistique</term><term>sensory tricks</term><term>torticollis</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Muscle activities in 26 patients with predominantly rotational torticollis were quantified using surface electromyography. In the subgroup of 19 patients with an effective sensory trick, different modes and bilateral locations of trick application led to significant (P < 0.002) reduction of electromyographic (EMG) activity. A strong correlation was found between the efficacy of trick manoeuvres and the starting head position. Trick application in a neutral or even contralateral position was most effective while no reduction of muscle activity during trick application at the maximum dystonic head position was found (P < 0.001). We propose a two‐phase model: First, normalisation of head posture is obtained by counterpressure or volitional antagonistic muscle activity. 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