Investigation of an unusual, high‐frequency jaw tremor with coherence analysis
Identifieur interne : 002797 ( Main/Exploration ); précédent : 002796; suivant : 002798Investigation of an unusual, high‐frequency jaw tremor with coherence analysis
Auteurs : Paul F. Sowman [Australie] ; Philip D. Thompson [Australie] ; Timothy S. Miles [Australie]Source :
- Movement Disorders [ 0885-3185 ] ; 2008-02-15.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- MESH :
- methods : Electromyography.
- pathology : Tremor.
- physiopathology : Masticatory Muscles, Tremor.
- Adult, Attention, Humans, Jaw, Male, Movement.
Abstract
Normal physiological tremor of the jaw has a frequency of 6 to 8 Hz. A patient is described with jaw tremor at frequencies of 12 Hz during jaw movement and 15 Hz when the jaw was relaxed. The 15 Hz tremor was driven by synchronous, bilateral bursts of activity in the temporalis and masseter muscles, which alternated with digastric bursts. Coherence analysis indicated the tremor was highly correlated with both opening and closing muscle activity, and that the opening and closing muscles were about 180° out of phase. The existence of two tremors with different, nonphysiological peak frequencies and the influence of attention, relaxation, and movement in switching from one tremor frequency to the other, suggest that more than one generator may be operating. © 2007 Movement Disorder Society
Url:
DOI: 10.1002/mds.21863
Affiliations:
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Le document en format XML
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<term>Attention</term>
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<term>Humans</term>
<term>Jaw</term>
<term>Male</term>
<term>Masticatory Muscles (physiopathology)</term>
<term>Masticatory muscle</term>
<term>Movement</term>
<term>Nervous system diseases</term>
<term>Tremor</term>
<term>Tremor (pathology)</term>
<term>Tremor (physiopathology)</term>
<term>coherence analysis</term>
<term>masseter</term>
<term>masticatory muscles</term>
<term>tremor</term>
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<term>Haute fréquence</term>
<term>Muscle masticateur</term>
<term>Mâchoire</term>
<term>Pathologie du système nerveux</term>
<term>Tremblement</term>
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<front><div type="abstract" xml:lang="en">Normal physiological tremor of the jaw has a frequency of 6 to 8 Hz. A patient is described with jaw tremor at frequencies of 12 Hz during jaw movement and 15 Hz when the jaw was relaxed. The 15 Hz tremor was driven by synchronous, bilateral bursts of activity in the temporalis and masseter muscles, which alternated with digastric bursts. Coherence analysis indicated the tremor was highly correlated with both opening and closing muscle activity, and that the opening and closing muscles were about 180° out of phase. The existence of two tremors with different, nonphysiological peak frequencies and the influence of attention, relaxation, and movement in switching from one tremor frequency to the other, suggest that more than one generator may be operating. © 2007 Movement Disorder Society</div>
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