The relationship between the sum of the edges of frontal connectivity from 80 to 100 ms and the SARA score in patients with MSA. There is a significant negative correlation between the SARA score and the sum of the edges of frontal connections from 80 to 100 ms after rTMS intervention, independent of real or sham rTMS. SARA: scale for the assessment and rating of ataxia; rTMS: repetitive transcranial magnetic stimulation; sTMS: single-pulse transcranial magnetic stimulation.