Seizure detection using earth movers' distance and SVM in intracranial EEG

Seizure detection is extremely essential for long-term monitoring of epileptic patients. This paper investigates the detection of epileptic seizures in multi-channel long-term intracranial electroencephalogram( iEEG). The algorithm conducts wavelet decomposition of iEEGs with five scales,and transforms the sum of the three frequency bands into histogram for computing the distance. The proposed method combines a novel feature called EMD-L1,which is an efficient algorithm of earth movers' distance( EMD),with support vector machine( SVM) for binary classification between seizures and non-seizures. The EMD-L1 used in this method is characterized by low time complexity and high processing speed by exploiting the L1 metric structure. The smoothing and collar technique are applied on the raw outputs of SVM classifier to obtain more accurate results. Several evaluation criteria are recommended to compare our algorithm with other conventional methods using the same dataset from the Freiburg EEG database. Experiment results show that the proposed method achieves a high sensitivity,specificity and low false detection rate,which are 95.73%,98. 45% and 0. 33 /h,respectively. This algorithm is characterized by its robustness and high accuracy with the possibility of performing real-time analysis of EEG data,and may serve as a seizure detection tool for monitoring long-term EEG.