Epileptic seizure prediction using diffusion distance and bayesian linear discriminate analysis on intracranial EEG

S Yuan, W Zhou, L Chen - International journal of neural systems, 2018 - World Scientific
S Yuan, W Zhou, L Chen
International journal of neural systems, 2018World Scientific
Epilepsy is a chronic neurological disorder characterized by sudden and apparently
unpredictable seizures. A system capable of forecasting the occurrence of seizures is crucial
and could open new therapeutic possibilities for human health. This paper addresses an
algorithm for seizure prediction using a novel feature—diffusion distance (DD) in intracranial
Electroencephalograph (iEEG) recordings. Wavelet decomposition is conducted on
segmented electroencephalograph (EEG) epochs and subband signals at scales 3, 4 and 5 …
Epilepsy is a chronic neurological disorder characterized by sudden and apparently unpredictable seizures. A system capable of forecasting the occurrence of seizures is crucial and could open new therapeutic possibilities for human health. This paper addresses an algorithm for seizure prediction using a novel feature — diffusion distance (DD) in intracranial Electroencephalograph (iEEG) recordings. Wavelet decomposition is conducted on segmented electroencephalograph (EEG) epochs and subband signals at scales 3, 4 and 5 are utilized to extract the diffusion distance. The features of all channels composing a feature vector are then fed into a Bayesian Linear Discriminant Analysis (BLDA) classifier. Finally, postprocessing procedure is applied to reduce false prediction alarms. The prediction method is evaluated on the public intracranial EEG dataset, which consists of 577.67h of intracranial EEG recordings from 21 patients with 87 seizures. We achieved a sensitivity of 85.11% for a seizure occurrence period of 30min and a sensitivity of 93.62% for a seizure occurrence period of 50min, both with the seizure prediction horizon of 10s. Our false prediction rate was 0.08/h. The proposed method yields a high sensitivity as well as a low false prediction rate, which demonstrates its potential for real-time prediction of seizures.
World Scientific
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