rTMS of supplementary motor area modulates therapy-induced dyskinesias in Parkinson disease.

Koch, G; Brusa, L; Caltagirone, C; Peppe, A; Oliveri, M; Stanzione, P; Centonze, D · Neurology · 2005

case_series · Level IV

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Abstract

The neural mechanisms and circuitry involved in levodopa-induced dyskinesia are unclear. Using repetitive transcranial magnetic stimulation (rTMS) over the supplementary motor area (SMA) in a group of patients with advanced Parkinson disease, the authors investigated whether modulation of SMA excitability may result in a modification of a dyskinetic state induced by continuous apomorphine infusion. rTMS at 1 Hz was observed to markedly reduce drug-induced dyskinesias, whereas 5-Hz rTMS induced a slight but not significant increase.

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