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A Discrete-Wavelet-Transform- and Hidden-Markov-Model-Based Approach for Epileptic Focus Localization
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Author(s): Deba Prasad Dash (Indian Institute of Technology Patna, India)and Maheshkumar .H Kolekar (Indian Institute of Technology Patna, India)
Copyright: 2018
Pages: 12
Source title:
Biomedical Signal and Image Processing in Patient Care
Source Author(s)/Editor(s): Maheshkumar H. Kolekar (Indian Institute of Technology Patna, India)and Vinod Kumar (Indian Institute of Technology Roorkee, India)
DOI: 10.4018/978-1-5225-2829-6.ch003
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Abstract
Epilepsy is the most common neurological disorder with 40-50 million people suffering with it worldwide. Epilepsy is not life threatening but it disables the person to a greater extent due to its uncertainty of occurrences. Epilepsy is detected by repeated occurrences of seizure. Seizure can be generated in brain due to abnormal activity of group of neurons caused by brain tumor, genetic problem, infection, hemorrhage etc. Seizure can be detected by observing the variation in Electroencephalogram (EEG) signal. Focal seizure is defined as seizure localized in one lobe of brain. In this chapter discrete wavelet transform and Hidden Markov Model based focal seizure detection method is proposed for epileptic focus localization. EEG signal was decomposed up to level 5 using dual tree complex wavelet transform and entropy features such as collision entropy, minimum and modified sample entropy were extracted. Hidden Markov model was used for classification purpose. Maximum 80% accuracy was achieved in detecting focal and non-focal EEG signal.
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