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. 2021 Jun 30;12:660516. doi: 10.3389/fpsyg.2021.660516

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Copyright © 2021 Zimmermann, Fürer, Kleinbub, Ramseyer, Hütten, Steppan and Schmeck.

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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Study setting. 1, Two separate video cameras almost perpendicular to face; 2, One boundary layer microphone on wall and two shotgun microphones under table; 3, Electrodermal and motion sensor; 4, Heart rate motion sensor.