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. 2022 Jun 7;16:900146. doi: 10.3389/fnins.2022.900146

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Copyright © 2022 Wang, Liu, Zhu, He, Wei, Wang, Xu, Pan, Huang, Chen and Li.

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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The ECG signals recorded by wet (blue) and flexible non-contact electrode (red) under different walking speeds (from left to right and from up to down, they were 2, 3, 4, 5, 6, and 7 km/h, respectively).