Automatic Seizure Detection Using Wavelet Transform and SVM in Long-Term Intracranial EEG

作者：Liu Yinxia^*; Zhou Weidong; Yuan Qi; Chen Shuangshuang

来源：IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2012, 20(6): 749-755.

DOI：10.1109/TNSRE.2012.2206054

• Electroencephalogram (EEG)
• seizure detection
• support vector machine (SVM)
• wavelet transform

Automatic seizure detection is of great significance for epilepsy long-term monitoring, diagnosis, and rehabilitation, and it is the key to closed-loop brain stimulation. This paper presents a novel wavelet-based automatic seizure detection method with high sensitivity. The proposed method first conducts wavelet decomposition of multi-channel intracranial EEG (iEEG) with five scales, and selects three frequency bands of them for subsequent processing. Effective features are extracted, such as relative energy, relative amplitude, coefficient of variation and fluctuation index at the selected scales, and then these features are sent into the support vector machine for training and classification. Afterwards a postprocessing is applied on the raw classification results to obtain more accurate and stable results. Postprocessing includes smoothing, multi-channel decision fusion and collar technique. Its performance is evaluated on a large dataset of 509 h from 21 epileptic patients. Experiments show that the proposed method could achieve a sensitivity of 94.46% and a specificity of 95.26% with a false detection rate of 0.58/h for seizure detection in long-term iEEG.

• 出版日期2012-11
• 单位山东大学