Geste antagoniste effects on motor performance in dystonia—a kinematic study
Background
The kinematic effects of gestes have not previously been studied. The mechanism(s) by which these sensory tricks modify dystonic movement is not well understood.
Objectives
A kinematic investigation of the geste phenomenon in patients with dystonia.
Methods
Twenty-three patients with dystonia associated with a geste were studied. Twenty-nine healthy controls also participated. Fifteen seconds of finger tapping was recorded by electromagnetic sensors, and the task was repeated with geste. Separable motor components were extracted using a custom-written MATLAB script. Performance with and without geste was compared using Wilcoxon signed ranks testing.
Results
Speed and fluency of finger tapping is impaired in dystonia. When patients executed their geste, speed of movement (amplitude x frequency) increased (p<0.0001), and halts decreased (p = 0.007).
Conclusions
That gestes improve not only dystonic muscle contraction but also the efficiency of voluntary movement suggests a broad influence at the premotor control stage.
History
Publication title
Movement Disorders Clinical PracticeVolume
9Issue
6Pagination
759-764ISSN
0885-3185Department/School
Wicking Dementia Research Education CentrePublisher
John Wiley & Sons, Inc.Place of publication
Div John Wiley & Sons Inc, 605 Third Ave, New York, USA, Ny, 10158-0012Rights statement
© 2022 The Authors. Movement Disorders Clinical Practice published by Wiley Periodicals LLC. on behalf of International Parkinson and Movement Disorder Society. This is an open access article under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License, (https://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.Repository Status
- Open