Published September 11, 2026, this randomized controlled study examined a single 20-minute session of 10-Hz rTMS in 36 people with mild-to-moderate Parkinson’s disease. Nine participants were assigned to each of four groups: supplementary motor area, primary motor cortex, combined stimulation or sham.
What the researchers found Supplementary motor area stimulation showed stronger gains than sham in reach-to-grasp planning across the tested conditions and improved one coordination measure in the non-barrier task. Execution outcomes did not differ significantly between groups. Combined stimulation produced no additive benefit.
How to read the result The study tested immediate effects after one session in small groups. It does not establish durable functional improvement, an optimal treatment course or superiority for everyday motor rehabilitation. Adverse-event and follow-up details were not available in the abstract.
Why it matters The result supports more precise study of stimulation target and task component, rather than assuming that more sites produce a better response.
Source and disclosure Peer-reviewed randomized study; authoritative abstract checked. The authors declared no known competing financial interests. Funding and equipment details were not available in the checked record. Prepared with AI assistance and source-checked September 18, 2026.