Channel Selection-based Temporal Convolutional Network for Patient-specific Epileptic Seizure Detection

Since sudden and recurrent epileptic seizures seriously affect people’s lives, computer-aided automatic seizure detection is crucial for precise diagnosis and prompt treatment. A novel seizure detection algorithm named channel selection-based temporal convolutional network (CS-TCN) was proposed in this paper. Firstly, EEG recordings were segmented into 2-second intervals and features were extracted from both the time and frequency domains. Then the expanded fisher score channel selection method was employed to select channels that contribute the most to seizure detection. Finally, the features from selected EEG channels were fed into the temporal convolutional network (TCN) to capture inherent temporal dependencies of EEG signals and detect seizure events. CHB-MIT and Siena datasets were used to verify the detection performance of the CS-TCN algorithm, achieving sensitivities of 98.56% and 98.88%, and specificities of 99.80% and 99.88% in sample-wise analysis, respectively. In event-wise analysis, the algorithm achieved sensitivities of 97.57% and 95.00%, with delays of 6.91 and 18.62 seconds, and FDR/h of 0.11 and 0.39, respectively. These results surpassed state-of-the-art few-channel algorithms for both datasets. CS-TCN algorithm offers excellent performance while simplifying model complexity and computational requirements, thus showcasing its potential for facilitating seizure detection in home environments.