Electroencephalography Artifact Removal using Optimized Radial Basis Function Neural Networks

Majlesi Journal of Electrical Engineering

مقاله 13، دوره 14، شماره 4، اسفند 2020، صفحه 133-144   

نوع مقاله: Review Article

شناسه دیجیتال (DOI): 10.29252/mjee.14.4.133

نویسندگان

Shoorangiz Shams Shamsabad Farahani^{* 1}؛ Mohammad Mahdi Arefi²؛ Amir Hossein Zaeri³

¹1- Department of Electrical Engineering, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran

²Department of Power and Control Engineering, School of Electrical and Computer Engineering, Shiraz University, 71348-51154 Shiraz, Iran.

³Department of Electrical Engineering, Shahin shahr Branch, Islamic Azad University, Shahin shahr, Iran

چکیده

Electroencephalography (EEG) is a major clinical tool to diagnose, monitor and manage neurological disorders which is mostly affected by artifacts. Given the importance and the need for an automated method to remove artifacts, in this paper some intelligent automated methods are proposed which are composed of three main parts as extraction of effective input, filtering and filter optimization. Wavelet transform is utilized to extract the effective input, and the wavelet approximation coefficients are used as an effective input signal. In addition, Radial Basis Function Neural Network (RBFNN) has been used for filtering. The appropriate number of RBFs has been selected using extensive simulations, and the optimal value​​ of spread parameter has been achieved by Bees algorithm (BA). Finally, the proposed artifact removal schemes have been evaluated on some real contaminated EEG signals in Mashad Ghaem hospital database. The results show that the proposed artifact removal schemes are able to effectively remove artifacts from EEG signals with little underlying brain signal distortion.

کلیدواژه‌ها

Artifacts؛ Bees Algorithm (BA)؛ Electroencephalography؛ Optimization؛ Radial Basis Function Neural Network (RBFNN)؛ Wavelet Transform (WT)

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