“…Regarding signal processing algorithms that recognize signals generated from complex structures in the human body, methods showing excellent performance in nonlinear and nonspecific data processing, such as fuzzy logic and neural network theory, are being extensively used [ 11 , 12 , 13 , 30 , 42 , 43 , 44 , 45 ]. Additionally, prior studies have combined fuzzy logic and neural network theory to complement each other [ 46 , 47 , 48 ].…”