Supplementary Motor Area is a Potential Target for Speech Disturbance in Parkinson Disease

we plan to recruit 60 patients with Parkinson disease, comprising 30 patients with speech disturbance and 30 age- and sex-match patients without speech disturbance. Each group of patients will be randomly divided into sham stimulation or rTMS. A total of 10 rTMS sessions will be applied in 2 weeks. The effect of rTMS will be evaluated via the changes of speech performance and functional connectivity which was analyzed from resting-state functional magnetic resonance imaging.