Single-session tDCS-supported retraining does not improve fine motor control in musician's dystonia.

Abstract:

BACKGROUND:Focal dystonia in musicians (MD) is a task-specific movement disorder with a loss of voluntary motor control during instrumental playing. Defective inhibition on different levels of the central nervous system is involved in the pathophysiology. Sensorimotor retraining is a therapeutic approach to MD and aims to establish non-dystonic movements. Transcranial direct current stimulation (tDCS) modulates cortical excitability and alters motor performance. In this study, tDCS of the motor cortex was expected to assist retraining at the instrument. METHODS:Nine professional pianists suffering from MD were included in a placebo-controlled double-blinded study. Retraining consisted of slow, voluntarily controlled movements on the piano and was combined with tDCS. Patients were treated with three stimulation protocols: anodal tDCS, cathodal tDCS and placebo stimulation. RESULTS:No beneficial effects of single-session tDCS-supported sensorimotor retraining on fine motor control in pianists with MD were found in all three conditions. CONCLUSIONS:The main cause of the negative result of this study may be the short intervention time. One retraining session with a duration of 20 min seems not sufficient to improve symptoms of MD. Additionally, a single tDCS session might not be sufficient to modify sensorimotor learning of a highly skilled task in musicians with dystonia.

journal_name

Restor Neurol Neurosci

authors

Buttkus F,Baur V,Jabusch HC,de la Cruz Gomez-Pellin M,Paulus W,Nitsche MA,Altenmüller E

doi

10.3233/RNN-2011-0582

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

85-90

issue

2

eissn

0922-6028

issn

1878-3627

pii

7KN33WQ23N1H28K8

journal_volume

29

pub_type

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