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Differences of brain activity between PD patients and controls during performance of unilateral right hand motor task. (A) brain regions more activated in PD patients than in controls; (B) brain regions more activated in controls than in PD patients. Abbreviations: L, left; R, right; CB, cerebellum; M1, primary motor cortex; PMC, premotor cortex; PG, postcentral gyrus; Pu, putamen; SMA, supplementary motor area.
