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. 2023 Feb 22;17:1129049. doi: 10.3389/fnins.2023.1129049

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Copyright © 2023 Zhang, Chen, Xu, Zhang, Hu and Chen.

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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Time-frequency maps of the EEG on “virtual channel”. (A) Left wrist rotation; (B) cup grasping; (C) forward arm extension. The abscissa denotes time points, and the ordinate denotes frequency bands.