Analysis of normal and epileptic seizure EEG signals using empirical mode decomposition

详细信息    查看全文

• 作者：Ram Bilas Pachori  ; ;   ; ^{pachori@iiti.ac.in} ; Varun Bajaj ;   ; ^{varun@iiti.ac.in}
• 关键词：Electroencephalogram (EEG) signal ; Epilepsy ; Empirical mode decomposition ; EEG signal analysis
• 刊名：Computer Methods and Programs in Biomedicine
• 出版年：2011
• 出版时间：December 2011
• 年：2011
• 卷：104
• 期：3
• 页码：373-381
• 全文大小：2491 K

文摘

Epilepsy is one of the most common neurological disorders characterized by transient and unexpected electrical disturbance of the brain. The electroencephalogram (EEG) is an invaluable measurement for the purpose of assessing brain activities, containing information relating to the different physiological states of the brain. It is a very effective tool for understanding the complex dynamical behavior of the brain. This paper presents the application of empirical mode decomposition (EMD) for analysis of EEG signals. The EMD decomposes a EEG signal into a finite set of bandlimited signals termed intrinsic mode functions (IMFs). The Hilbert transformation of IMFs provides analytic signal representation of IMFs. The area measured from the trace of the analytic IMFs, which have circular form in the complex plane, has been used as a feature in order to discriminate normal EEG signals from the epileptic seizure EEG signals. It has been shown that the area measure of the IMFs has given good discrimination performance. Simulation results illustrate the effectiveness of the proposed method.