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. 2024 Jan;242(1):179-193.
doi: 10.1007/s00221-023-06741-3. Epub 2023 Nov 23.

The role of engagement and arousal in emotion regulation: an EEG study

Vladimir Kosonogov  1 , Ioannis Ntoumanis  2 , Gullu Hajiyeva  2 , Iiro Jääskeläinen  2
Affiliations

The role of engagement and arousal in emotion regulation: an EEG study

Vladimir Kosonogov et al. Exp Brain Res. 2024 Jan.

Abstract

Cognitive reappraisal and expressive suppression are well-studied strategies of emotion regulation (ER). However, the results on their physiological basis are controversial. While in some studies, ER was accompanied by the inhibition of the nervous system, others suggested that ER even might increase arousal and engagement. We calculated the inter-subject correlation (ISC) and indices of engagement, valence and arousal of EEG during suppression, reappraisal, or natural watching of neutral and negative videos. First, both suppression and reappraisal provoked a higher ISC in comparison with watching negative or neutral videos. We consider this as a marker of engagement to the task and feedback processing required for ER. Second, the engagement index was lower during ER compared to watching negative videos in central electrodes, whereas both strategies provoked a higher engagement in frontal electrodes. Third, the arousal index of EEG was higher during all negative conditions; therefore, regulation required a certain level of arousal. In summary, different EEG measures seem to be sensitive to different aspects of ER.

Keywords: Arousal; EEG; Emotion regulation; Engagement; Inter-subject correlation; Valence.

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