Journal
JOURNAL OF CHILD NEUROLOGY
Volume 29, Issue 2, Pages 232-239Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0883073813492385
Keywords
dystonia; child; transcranial direct current stimulation; overflow; electromyogram
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Funding
- National Institute of Neurological Disorders and Stroke [NS052236]
- Crowley-Carter Foundation
- Don and Linda Carter Foundation
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Increased motor cortex excitability is a common finding in dystonia, and transcranial direct current stimulation can reduce motor cortex excitability. In an earlier study, we found that cathodal direct-current stimulation decreased motor overflow for some children with dystonia. To investigate this observation further, we performed a sham-controlled, double-blind, crossover study of 14 children with dystonia. We found a significant reduction in overflow following real stimulation, when participants performed the experimental task with the hand contralateral to the cathode. While these results suggest that cathodal stimulation may help some children to reduce involuntary overflow, the size of the effect is small. Further research will need to investigate ways to increase the magnitude of the effect of cathodal transcranial direct current stimulation.
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