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. 2021 Oct 14;15:704414. doi: 10.3389/fnhum.2021.704414

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Copyright © 2021 Grechuta, De La Torre Costa, Ballester and Verschure.

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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Experimental setup and protocol. (A) Schematic bird view of the virtual environment. 1- goal; 2- five starting positions; 3- an example of a directional error; 4- a clock; 5- the Go Signal (GS). (B) Experimental setup. 1- motion tracking device (Kinect); 2- Head Mounted Display (HMD, HTC-Vive Headset); 3- Arduino and E-Health; 4- Bracelets with reflecting markers for the tracking. (C) Virtual scene. The first-person perspective view of the scene. (D) Experimental protocol. All participants go through the Training Block (TB) (25 trials). Then they are randomly split into two experimental conditions: congruent (congruent condition, green arrow) or incongruent (incongruent condition, black arrow), and both groups undergo the Experimental Block (EB). At the end of the experiment, all the participants experience the Threatening Event.