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tDCS

JZ Jiayi Zhao
YL Yuanyuan Li
XZ Xu Zhang
YY Ying Yuan
YC Yinan Cheng
JH Jun Hou
GD Guoping Duan
BL Baohu Liu
JW Jie Wang
DW Dongyu Wu
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A portable battery-driven device (IS200, Chengdu, China) was used to deliver a constant current of 1.2 mA (approximately 0.05 mA/cm2) for 20 min to the left lip region of M1 by using a pair of saline-soaked surface sponge electrodes (4.5 × 5.5 cm). The location of the left lip region of M1 was identified where maximal amplitude motor evoked potentials were induced in orbicularis oris muscle through transcranial magnetic stimulation (TMS) (13). Over the right shoulder, the cathodal electrode was placed.

The device was turned off automatically after the 30s for the sham tDCS group, and the electrodes were placed in the same locations as the tDCS group. For both active and sham tDCS, the current intensity increased and decreased gradually. Thus, neither researchers nor patients could tell whether the stimulation they received was real or sham.

Copyright and License information:  ©2022 Zhao, Li, Zhang, Yuan, Cheng, Hou, Duan, Liu, Wang and Wu.
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) and the copyright owner(s) 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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