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. 2018 Jun 13;12:243. doi: 10.3389/fnhum.2018.00243

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Copyright © 2018 Chen, Yu, Niu and Liu.

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 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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Schema of current design. All subjects had a resting state session for ~65 s at the beginning of the testing period. Then, half of the subjects had a single-postural control session before the dual-task and single-cognitive task sessions, while others completed the single-postural control session last; the session type order was counterbalanced across subjects. Different WM tasks were also counterbalanced within subjects. Each WM-related task had two 65-s blocks. fNIRS data were collected throughout all sessions. Center of pressure (COP) data were recorded during the single-postural control and dual-task sessions.