EEG responses to mood induction

• Main Author: Höller, Y (via Mendeley Data)
• Language: unknown
• Published: 2022
• Subjects: Interdisciplinary sciences; Akureyri; Yoke; University of Akureyri
• Online Access: http://nbn-resolving.org/urn:nbn:nl:ui:13-b9-gbzk; https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:249296

Measurements were performed at the EEG-laboratory of the University of Akureyri between end of July and beginning of October 2019. After completion of informed consent, participants answered all questionnaires mentioned in section 2.3 and the EEG-cap was mounted. The first two conditions recorded were at rest for 3 min with eyes open and 3min with eyes closed, with the screen of the stimulus computer turned off and dimmed light. Subsequently participants performed an emotional pictures memory task, which was not used for the present study. The next condition was a Stroop task. In the final condition participants received a printed three part form containing questions about current mood. All instructions were given verbally through headphones or on the screen of the stimulus computer. Firstly, participants answered one question on their current mood. Next, a 5 min musical piece, thought to evoke temporary sadness or dysphoria, was played and participants were asked to freely experience any emotions they might feel. We used a musical excerpt from Prokofiev’s “Russia Under the Mongolian Yoke”, remastered at half speed. This has been used and found to be effective in inducing a transient dysphoric mood in previous research on cognitive vulnerability to depression (Jarrett et al., 2012; Lau et al., 2004; Olafsson et al., 2020). Immediately after the music had finished, participants answered again the question on their current mood.They were then instructed to wait for 5 minutes for a challenging cognitive task. Finally, participants answered once again the question regarding their current mood. After this, participants were informed that no difficult task would follow and that the study was completed.EEG recording EEG data was gathered using BrainVision BrainAmp Recorder and Amplifier (Brain Products GmbH, Gilching, Germany) and digitized at a sampling rate of 256 Hz. Recording was conducted using 32 electrodes (Fp1, Fp2, F3, F4, C3, C4, P3, P4, O1, O2, F7, F8, T7, T8, P7, P8, Fz, Cz, Pz, FC1, FC2, CP1, CP2, FC5, ...