Abstract
Electroencephalogram (EEG) emotion recognition has gained considerable attention due to its ability to reflect people’s inner emotional states objectively and naturally. Feature extraction is a critical step in EEG emotion recognition because of non-stationarity and irregularity of EEG signals. A feature extraction method using Variational Modal Decomposition (VMD) to extract Dispersion Entropy (DispEn) is proposed in this paper. Raw EEG signal is decomposed into several components, and DispEn of each component is extracted in eight emotion-related channels. Our method was tested on DEAP dataset in which the EEG emotional states are accessed in Valence-Arousal emotional space. Four emotional states (i.e., HVHA, HVLA, LVHA, LVLA) are classified by Support Vector Machine (SVM). The experimental results show that the accuracy of emotion recognition is 77.87%, which demonstrates its effectiveness.
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