Deep learning-based self-induced emotion recognition using EEG

• DOI: 10.3389/fnins.2022.985709
• Publication Date: 2022-09-16T07:59:45Z
• Authors: Yerim Ji; Suh-Yeon Dong
• Keywords: channel selection; high-density EEG; 0202 electrical engineering, electronic engineering, information engineering; deep learning; convolutional neural network; Neurosciences. Biological psychiatry. Neuropsychiatry; 02 engineering and technology; self-induced emotion recognition; RC321-571; Neuroscience

Emotion recognition from electroencephalogram (EEG) signals requires accurate and efficient signal processing and feature extraction. Deep learning technology has enabled the automatic extraction of raw EEG signal features that contribute to classifying emotions more accurately. Despite such advances, classification of emotions from EEG signals, especially recorded during recalling specific memories or imagining emotional situations has not yet been investigated. In addition, high-density EEG signal classification using deep neural networks faces challenges, such as high computational complexity, redundant channels, and low accuracy. To address these problems, we evaluate the effects of using a simple channel selection method for classifying self-induced emotions based on deep learning. The experiments demonstrate that selecting key channels based on signal statistics can reduce the computational complexity by 89% without decreasing the classification accuracy. The channel selection method with the highest accuracy was the kurtosis-based method, which achieved accuracies of 79.03% and 79.36% for the valence and arousal scales, respectively. The experimental results show that the proposed framework outperforms conventional methods, even though it uses fewer channels. Our proposed method can be beneficial for the effective use of EEG signals in practical applications.