title: Coherence of coactivation and acceleration in task-specific primary bowing tremor.
abstract: Coherences between coactivation of wrist antagonist muscles and movement fluctuation were assessed in four violinists with a task-specific tremor and four age-matched healthy violinists using electromyography and accelerometer. We found coherence between individual muscular activation and tremor only in patients at a frequency range of 3-8 Hz. The finding corroborates the notion that primary bowing tremor emerges mainly due to central neurogenic contributions via motor-unit synchronization. Furthermore, the coherence between the muscular coactivation and tremor suggests a relation of the tremor to dystonia.
authors.affiliation: Institute for Music Physiology and Musicians' Medicine, Hannover University of Music, Drama and Media, Emmichplatz 1, 30175, Hannover, Germany, andre.lee@hmtm-hannover.de.
authors.forename: André
authors.initials: A
authors.lastname: Lee
authors.forename: Kenta
authors.initials: K
authors.lastname: Tominaga
authors.forename: Shinichi
authors.initials: S
authors.lastname: Furuya
authors.forename: Fumio
authors.initials: F
authors.lastname: Miyazaki
authors.forename: Eckart
authors.initials: E
authors.lastname: Altenmüller
mesh_terms: D000704:Analysis of Variance; D016022:Case-Control Studies; D004558:Electric Stimulation; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000503:physiopathology*; D009146:Music; D014202:Tremor / Q000473:pathology / Q000503:physiopathology*