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. 2023 Jul 20;14:1211034. doi: 10.3389/fpsyg.2023.1211034

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Copyright © 2023 Lee, Lee, Lee, Ko and Kang.

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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Bimanual force control performances across three tDCS protocols. (A) Force accuracy, (B) force variability, (C) force symmetry, (D) bilateral motor synergies, (E) good variability, and (F) bad variability. Box plot show individual data (black circles), mean (X sign in the box), median (black horizontal line in the box), interquartile range (IQR = Q3-Q1; top and bottom of the box indicates Q3, and Q1), maximum value: Q1 + 1.5 × IQR, and minimum value: Q1–1.5 × IQR. Asterisk (*) denotes a significant difference between the Bi-AA and Sham tDCS protocol.