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. 2021 Oct 28;13:742928. doi: 10.3389/fnagi.2021.742928

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Copyright © 2021 Li, Chen, Xie 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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(A) Adaptive angular deviation as a function of initiation time of hand movement, (B) adaptive angular deviation (upper row) and initiation time of hand movement (lower row) as functions of performance in cognitive tests (left: Digital Symbol Test; middle: Block Design Test; and right: Stroop Color and Word Test), respectively. The red dots represent the group of older participants (n = 100) and the blue dots represent the group of younger participants (n = 20). The solid lines indicate linear regression model fits and rs represent the Pearson correlations between variables. Note, ^∗∗∗p < 0.001.