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An Improved EEG Signal Classification Using Neural Network with the Consequence of ICA and STFT
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 Title & Authors
An Improved EEG Signal Classification Using Neural Network with the Consequence of ICA and STFT
Sivasankari, K.; Thanushkodi, K.;
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Signals of the Electroencephalogram (EEG) can reflect the electrical background activity of the brain generated by the cerebral cortex nerve cells. This has been the mostly utilized signal, which helps in effective analysis of brain functions by supervised learning methods. In this paper, an approach for improving the accuracy of EEG signal classification is presented to detect epileptic seizures. Moreover, Independent Component Analysis (ICA) is incorporated as a preprocessing step and Short Time Fourier Transform (STFT) is used for denoising the signal adequately. Feature extraction of EEG signals is accomplished on the basis of three parameters namely, Standard Deviation, Correlation Dimension and Lyapunov Exponents. The Artificial Neural Network (ANN) is trained by incorporating Levenberg-Marquardt(LM) training algorithm into the backpropagation algorithm that results in high classification accuracy. Experimental results reveal that the methodology will improve the clinical service of the EEG recording and also provide better decision making in epileptic seizure detection than the existing techniques. The proposed EEG signal classification using feed forward Backpropagation Neural Network performs better than to the EEG signal classification using Adaptive Neuro Fuzzy Inference System (ANFIS) classifier in terms of accuracy, sensitivity, and specificity.
Adaptive neuro fuzzy inference system (ANFIS);Backpropagation neural network (BPNN);EEG signal;Epileptic seizure;Independent component analysis (ICA);Levenberg-marquardt algorithm;Neural network classification;Short time fourier transform (STFT);and thresholding;
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