Epileptic Seizure Detection with an End-to-End Temporal Convolutional Network and Bidirectional Long Short-Term Memory Model

Jan 17, 2024International journal of neural systems

Detecting Epileptic Seizures Using a Combined Time-Based Convolution and Memory Neural Network

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Abstract

On the CHB-MIT scalp EEG database, the proposed method achieved a segment-based sensitivity of 94.31%.

A novel end-to-end TCN-BiLSTM model was developed for automatic seizure detection from EEG data.
Filtered EEG data was analyzed to extract features and classify seizure activity.
On the CHB-MIT database, the method demonstrated a specificity of 97.13% and accuracy of 97.09%.
An event-based sensitivity of 96.48% and a false detection rate of 0.38/h were reported for the same database.
On the SH-SDU database, segment-based sensitivity reached 94.99%, with a specificity of 93.25% and accuracy of 93.27%.
The average detection time for 1 hour of EEG data was 5.65 seconds.

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Automatic seizure detection plays a key role in assisting clinicians for rapid diagnosis and treatment of epilepsy. In view of the parallelism of temporal convolutional network (TCN) and the capability of bidirectional long short-term memory (BiLSTM) in mining the long-range dependency of multi-channel time-series, we propose an automatic seizure detection method with a novel end-to-end TCN-BiLSTM model in this work. First, raw EEG is filtered with a 0.5-45 Hz band-pass filter, and the filtered data are input into the proposed TCN-BiLSTM network for feature extraction and classification. Post-processing process including moving average filtering, thresholding and collar technique is then employed to further improve the detection performance. The method was evaluated on two EEG database. On the CHB-MIT scalp EEG database, our method achieved a segment-based sensitivity of 94.31%, specificity of 97.13%, and accuracy of 97.09%. Meanwhile, an event-based sensitivity of 96.48% and an average false detection rate (FDR) of 0.38/h were obtained. On the SH-SDU database we collected, the segment-based sensitivity of 94.99%, specificity of 93.25%, and accuracy of 93.27% were achieved. In addition, an event-based sensitivity of 99.35% and a false detection rate of 0.54/h were yielded. The total detection time consumed for 1[Formula: see text]h EEG data was 5.65[Formula: see text]s. These results demonstrate the superiority and promising potential of the proposed method in real-time monitoring of epileptic seizures.

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Epileptic Seizure Detection with an End-to-End Temporal Convolutional Network and Bidirectional Long Short-Term Memory Model

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