Journal Article

Effective affective EEG-based indicators in emotion-evoking VR environments: an evidence from machine learning

Castiblanco Jimenez, Ivonne Angelica, Olivetti, Elena Carlotta, Vezzetti, Enrico, Celeghin, Alessia, Moos, Sandro, Marcolin, Federica

2024

Overview

This study investigates the use of electroencephalography (EEG) to characterize emotions and provides insights into the consistency between self-reported and machine learning outcomes. Thirty participants engaged in five virtual reality environments designed to elicit specific emotions, while their brain activity was recorded. The participants self-assessed their ground truth emotional state in terms of Arousal and Valence through a Self-Assessment Manikin. Gradient Boosted Decision Tree was adopted as a classification algorithm to test the EEG feasibility in the characterization of emotional states. Distinctive patterns of neural activation corresponding to different levels of Valence and Arousal emerged, and a noteworthy correspondence between the outcomes of the self-assessments and the classifier suggested that EEG-based affective indicators can be successfully applied in emotional characterization, shedding light on the possibility of using them as ground truth measurements. These findings provide compelling evidence for the validity of EEG as a tool for emotion characterization and its contribution to a better understanding of emotional activation.

• Publisher: Springer London,Springer Nature B.V
• Subject: Activation analysis / Algorithms / Arousal / Artificial Intelligence / Computational Biology/Bioinformatics / Computational Science and Engineering / Computer Science / Data Mining and Knowledge Discovery / Decision trees / Electroencephalography / Emotional factors / Emotions / Image Processing and Computer Vision / Indicators / Machine learning / Original Article / Probability and Statistics in Computer Science / Self assessment / Virtual environments / Virtual reality