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. 2021 Dec 24;12:806424. doi: 10.3389/fpsyg.2021.806424

Figure 3.

Figure 3

The procedure for the experiment started with the Mood questionnaire (Skola and Liarokapis, 2018), and equipping the EEG and VR headset. Afterwards the participants were allocated by order into each level and given a questionnaire after each condition followed by a debrief interview.