Newby, R and Muhamed, S and Alty, J and Cosgrove, J and Jamieson, S and Smith, S and Kempster, P, Geste antagoniste effects on motor performance in dystonia a kinematic study, Movement Disorders ISSN 0885-3185 (2022) [Refereed Article]
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.
A kinematic investigation of the geste phenomenon in patients with dystonia.
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.
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).
That gestes improve not only dystonic muscle contraction but also the efficiency of voluntary movement suggests a broad influence at the premotor control stage.
|Item Type:||Refereed Article|
|Keywords:||Dystonia, neurology, neurophysiology, movement disorders|
|Research Division:||Biomedical and Clinical Sciences|
|Research Field:||Neurology and neuromuscular diseases|
|Objective Group:||Clinical health|
|Objective Field:||Diagnosis of human diseases and conditions|
|UTAS Author:||Alty, J (Associate Professor Jane Alty)|
|Deposited By:||Wicking Dementia Research and Education Centre|
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