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Epileptic Seizure Detection in EEG Signals Using Discriminative Stein Kernel-Based Sparse Representation

2022-04-11

 

Author(s): Lei, C (Lei, Chang); Zheng, SZ (Zheng, Shuzhen); Zhang, X (Zhang, Xuan); Wang, DX (Wang, Dixin); Wu, HT (Wu, Hongtong); Peng, H (Peng, Hong); Hu, B (Hu, Bin)

Source: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT Volume: 71 Article Number: 4002315 DOI: 10.1109/TIM.2021.3137159 Published: 2022

Abstract: The automatic seizure detection in electroencephalogram (EEG) signals is crucial for the monitoring, diagnosis, and treatment of epilepsy. In this study, an intelligent detection framework with the discriminative Stein kernel-based sparse representation (DSK-SR) is constructed to distinguish epileptic EEG signals. Specifically, in the scheme of DSK-SR, EEG samples are presented by symmetric positive definite (SPD) matrices in the form of covariance descriptors (CovDs). Taking into account the non-Euclidean geometry of the Riemannian manifold of SPD matrices, the traditional SR in Euclidean space cannot be applied in its original form on the manifold. To this end, the DSK defined on the manifold can permit us to embed the manifold into a high-dimensional reproducing kernel Hilbert space (RKHS) to perform SR. Then, test samples are sparsely coded over the training sets, and the classification decision is performed by assessing which class generates the minimal reconstructed residuals. Eventually, competitive experimental results on three widely recognized EEG datasets against the state-of-the-art methods demonstrate the efficacy of the proposed DSK-SR in identifying epileptic EEG signals, indicating its powerful application potential in the automatic seizure detection.

Accession Number: WOS:000766300200065

ISSN: 0018-9456

eISSN: 1557-9662

Full Text: https://ieeexplore.ieee.org/document/9656882



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