“…Among various approaches proposed for the classification of oscillatory patterns observed in the EEG recordings (Garrett et al, 2003 ; Dias et al, 2007 ; Siuly et al, 2016 ), some are worth mentioning such as discriminant analysis methods (which were very popular in the 1960s) (Niedermeyer and Lopes da Silva, 2005 ; Hasan et al, 2015 ), independent component analysis (Makeig et al, 1996 ; Ungureanu et al, 2004 ; Hobson and Hillebrand, 2006 ) (often used for finding and eliminating biased artifacts in EEG signals; Jung et al, 2000 ), short-time Fourier transform (Gotman et al, 1973 ), and wavelet-based methods (Hramov et al, 2015 ), including techniques of adaptive mother wavelets (Sitnikova et al, 2009 ; Nazimov et al, 2013 ) and methods based on estimation of event-related synchronization/desynchronization (Morash et al, 2008 ). Nowadays, another classification technique known as artificial neural network (ANN) (Bishop, 2006 ; Haykin, 2008 ) is widely used in computer science, biophysics, deep learning, econometrics, etc.…”