“…PSD is a positive real function that is associated with a stationary stochastic process to measure the power strength at each frequency band [37,38]. The fast Fourier Transform (FFT) method is directly used to compute PSD [14,39]. By using a 2 seconds window size and 0.5 seconds step size, the average BP is calculated from the PSD of Theta (θ), Alpha (α), Low beta (β), High beta (β), and Gamma (γ) [14,17,27,40].…”