Abstract

In a recent Transcranial Magnetic Stimulation (TMS) study, we demonstrated abnormally enhanced Short-Interval Intracortical Facilitation (SICF) in patients with Parkinson's Disease (PD). These abnormalities reflect increased glutamatergic transmission in primary motor cortex (M1). A short-term treatment with safinamide at 100 mg/day can restore SICF in PD by reducing glutamatergic transmission via blockade of voltage-gated sodium channels. We here examined the long-term effect of chronic treatment with safinamide 100 mg/day on SICF and other measures of M1 excitability and plasticity in PD.

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