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Real NIBS for Cervical Dystonia
Study Summary
Cervical dystonia (CD) is a common movement disorder. Despite the optimization of botulinum toxin injection (BoNT-A) parameters including muscle selection and dosing, a significant proportion of patients report low levels of satisfaction, and a few of them develop resistance to therapy. The only options for such patients would be invasive therapy such as pallidotomy or pallidal deep brain stimulation. Currently, studies are going on the effectiveness of noninvasive neurostimulation in different neurological disorders. Transcranial Direct Current Stimulation (tDCS) or transcranial pulsed current stimulation (tPCS) are known to be safe non-invasive intervention with almost no side effects that can be used to provide complementary treatment. To detect the dysfunctional regions five min resting state quantitative EEG (qEEG) eyes closed will be recorded and analyzed each time before and after noninvasive stimulation. The investigators will evaluate the efficacy of acute noninvasive stimulation in those CD patients who are already on 3 monthly BoNT-A therapy but the effect of BoNT-A is wearing off in 8 weeks. Kinematics (static and dynamic movements) of neck movements will be recorded using established technology before and after stimulation.
- Cervical Dystonia
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