Coherence of coactivation and acceleration in task-specific primary bowing tremor

André Lee, Kenta Tominaga, Shinichi Furuya, Fumio Miyazaki, Eckart Altenmüller

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


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.

Original languageEnglish
Pages (from-to)739-742
Number of pages4
JournalJournal of Neural Transmission
Issue number7
StatePublished - Jul 2014
Externally publishedYes


  • Coherence
  • Dystonia
  • EMG
  • Essential tremor
  • Task-specificity
  • Tremor


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