promise as a viable treatment for myoclonus dystonia. although myoclonus and dystonia are present in myoclonus dystonia patients, optimum treatment for myoclonus dystonia differs from the treatment for myoclonus or dystonia alone. myoclonus improved significantly more than dystonia when deep brain stimulation was applied. in addition, myoclonus improved regardless of whether deep brain stimulation was applied to gpi or vim. however, gpi stimulation was more effective at reducing the symptoms of dystonia than vim stimulation.