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. 2017 Aug 29;8:445. doi: 10.3389/fneur.2017.00445

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Copyright © 2017 Lu, Chen, Chen, Duann, Ziemann and Tsai.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Motor-evoked potential (MEP) amplitudes (mean ± SEM in mV) recorded from the right first dorsal interosseus muscle in the healthy control (HC), Parkinson’s disease (PD), and spinocerebellar ataxia 3 (SCA3) groups. Comparisons between pre- (B0), immediate (P1), 30 min (P2), and 60 min (P3) post-CB → M1 PAS_2ms vs. CB → M1 PAS_6ms were shown. A significant MEP facilitation at P1 after CB → M1 PAS_2ms and MEP suppression at P1 and P2 after CB → M1 PAS_6ms were noted for the HC group (*P < 0.05 by non-parametric Mann–Whitney U test with Bonferroni’s correction). (B) The averaged MEP waveforms for the 10 subjects in the HC group. (C) Individual MEP data of the HC group (n = 10).