Abstract
To examine BDNF, dopamine, and motor function changes after bilateral anodal transcranial direct current stimulation (tDCS) in patients with Parkinson's disease. 20 patients undertook ten sessions of bilateral anodal tDCS stimulation applied simultaneously over FC1/FC2, targeting left and right prefrontal and motor areas. Dopamine and BDNF serum levels, and Movement Disorders Society - Unified Parkinson's Disease Rating Scale part three(MDS-UPDRS-III)total score and disability sub-scores were examined pre/post-tDCS stimulation. BDNF serum level increased significantly and came with significant improvement in motor functions (decrease in MDS-UPDRS-III total score/sub-scores), whereas dopamine level showed no changes. However, there was no significant statistical correlation between the motor functions' improvement and BDNF level increase. Bilateral anodal tDCS is a safe stimulation protocol that leads to motor functions' improvement and BDNF serum level increase in patients with Parkinson's disease, however the findings of this feasible study are preliminary and further study is needed.
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