4.6

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2.2

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  • ISSN 1674-8301
  • CN 32-1810/R
Moctezuma Luis Alfredo, Molinas Marta. Classification of low-density EEG for epileptic seizures by energy and fractal features based on EMD[J]. The Journal of Biomedical Research, 2020, 34(3): 180-190. DOI: 10.7555/JBR.33.20190009
Citation: Moctezuma Luis Alfredo, Molinas Marta. Classification of low-density EEG for epileptic seizures by energy and fractal features based on EMD[J]. The Journal of Biomedical Research, 2020, 34(3): 180-190. DOI: 10.7555/JBR.33.20190009

Classification of low-density EEG for epileptic seizures by energy and fractal features based on EMD

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  • Corresponding author:

    Luis Alfredo Moctezuma, Department of Engineering Cybernetics, Norwegian University of Science and Technology, Trondheim 7434, Norway. Tel: +47-92528886, E-mail: luisalfredomoctezuma@gmail.com

  • Received Date: January 14, 2019
  • Revised Date: May 15, 2019
  • Accepted Date: July 09, 2019
  • Available Online: August 28, 2019
  • We are here to present a new method for the classification of epileptic seizures from electroencephalogram (EEG) signals. It consists of applying empirical mode decomposition (EMD) to extract the most relevant intrinsic mode functions (IMFs) and subsequent computation of the Teager and instantaneous energy, Higuchi and Petrosian fractal dimension, and detrended fluctuation analysis (DFA) for each IMF. We validated the method using a public dataset of 24 subjects with EEG signals from 22 channels and showed that it is possible to classify the epileptic seizures, even with segments of six seconds and a smaller number of channels (e.g., an accuracy of 0.93 using five channels). We were able to create a general machine-learning-based model to detect epileptic seizures of new subjects using epileptic-seizure data from various subjects, after reducing the number of instances, based on the k-means algorithm.
  • Epilepsy is the most common neurological disorder of the brain that affects people worldwide from newborn to adult. It is characterized by recurrent seizures, which are brief episodes of signs or symptoms due to abnormal excessive or synchronous neuronal activity in the brain. The electroencephalogram (EEG) is a physiological method to measure and record the electrical activities generated by the brain from electrodes placed on the surface of the scalp. EEG has become the most used signal for detecting and predicting epileptic seizures. Machine learning for EEG signal processing constitute an important area of artificial intelligence dealing with the setting up of automated computer-aided systems allowing to help the medical staff, e.g. neurophysiologists, for detecting and predicting epileptic seizure activities from EEG signals. It offers solutions to difficult biomedical engineering problems related to detecting and predicting EEG epileptic seizures.

    The main goal of this special issue is to solicit original contributions with focus on recent advances in EEG signal processing and machine learning for seizures detection and prediction. This special issue selected 9 excellent papers from 20 papers received from a general call. The following paragraphs summarize the published papers.

    Ben Slimen et al reported "EEG epileptic seizure detection and classification based on dual-tree complex wavelet transform and machine learning algorithms"[1]. In this paper, the authors propose a robust automatic method for EEG epileptic seizure detection and classification based on Dual-tree complex wavelet transform for feature extraction with supervised learning algorithms.

    Ben Slimen et al reported "Epileptic seizure prediction based on EEG spikes detection of ictal-preictal states"[2]. In this study, an epileptic seizure prediction method is proposed based on the EEG spike rate in used as an indicator to anticipate seizure activities in EEG signal.

    Dash et al reported "Hidden Markov model based epileptic seizure detection using tunable Q wavelet transform"[3]. This paper presents a method for seizure detection based on entropy features extracted from the different sub-bands of tunable Q wavelet transform with Hidden Markov model.

    Moctezuma et al reported "Classification of low-density EEG for epileptic seizures by energy and fractal features based on EMD"[4]. In this paper, a novel method for classifying EEG epileptic seizures based on features extracted from Empirical mode decomposition (EMD).

    Torse et al reported "An optimized design of seizure detection system using joint feature extraction of multichannel EEG signals"[5]. This paper presents a real time seizure detection system for EEG epileptic seizure detection based on entropy features extracted from Ensemble EMD and TQWT decompositions of EEG signal with supervised learning techniques.

    Quintero-Rincón et al reported "A quadratic linear-parabolic model-based EEG classification to detect epileptic seizures"[6]. This paper develops an EEG classification method based on a quadratic linear-parabolic model and Random forest algorithm to discriminate seizure and non-seizure events.

    Raghu et al reported "Complexity analysis and dynamic characteristics of EEG using MODWT based entropies for identification of seizure onset"[7]. In this paper, the complexity analysis and dynamic characteristics of EEG signal based on maximal overlap discrete wavelet transform have been exploited for the identification of seizure onset.

    Vanabelle et al reported "Epileptic seizure detection using EEG signals and extreme gradient boosting"[8]. In this paper, the problem of automated seizure detection on the Temple University Hospital EEG Seizure Corpus dataset is treated using clinical EEG and machine learning algorithms.

    Ilakiyaselvan et al reported "Deep learning approach to detect seizure using reconstructed phase space images"[9]. In this study, the authors propose to use reconstructed phase space images to model the EEG signal as a chaotic system, and use them as input to Convolution Neural Network model.

    In conclusion, I trust that readers will find this selection of papers interesting. In addition, I would like to thank all authors contributing to this special issue, and the reviewers for their invaluable comments and recommendations on the submitted papers. Last, but not least, I wish to thank the editorial team for their significant support throughout the process.

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