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. 2021 Apr 14;15:641357. doi: 10.3389/fnhum.2021.641357

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Copyright © 2021 Chu, Luo, Tian, Han and Guo.

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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Six spatial patterns and corresponding spatial filters on average of all subjects we choose using CSP, which can be used to extract spatial features from the brain: (A) the vibration task, (B) the electrical task.