Emotion classification based on gamma-band EEG
2009 Annual International Conference of the IEEE Engineering in …, 2009•ieeexplore.ieee.org
In this paper, we use EEG signals to classify two emotions-happiness and sadness. These
emotions are evoked by showing subjects pictures of smile and cry facial expressions. We
propose a frequency band searching method to choose an optimal band into which the
recorded EEG signal is filtered. We use common spatial patterns (CSP) and linear-SVM to
classify these two emotions. To investigate the time resolution of classification, we explore
two kinds of trials with lengths of 3s and 1s. Classification accuracies of 93.5% plusmn 6.7 …
emotions are evoked by showing subjects pictures of smile and cry facial expressions. We
propose a frequency band searching method to choose an optimal band into which the
recorded EEG signal is filtered. We use common spatial patterns (CSP) and linear-SVM to
classify these two emotions. To investigate the time resolution of classification, we explore
two kinds of trials with lengths of 3s and 1s. Classification accuracies of 93.5% plusmn 6.7 …
In this paper, we use EEG signals to classify two emotions-happiness and sadness. These emotions are evoked by showing subjects pictures of smile and cry facial expressions. We propose a frequency band searching method to choose an optimal band into which the recorded EEG signal is filtered. We use common spatial patterns (CSP) and linear-SVM to classify these two emotions. To investigate the time resolution of classification, we explore two kinds of trials with lengths of 3s and 1s. Classification accuracies of 93.5% plusmn 6.7% and 93.0%plusmn6.2% are achieved on 10 subjects for 3s-trials and 1s-trials, respectively. Our experimental results indicate that the gamma band (roughly 30-100 Hz) is suitable for EEG-based emotion classification.
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