All groups analyzed the vertex recordings (Cz) and the average of Occipital leads (O1, O2) in standard frequency bands. Cleaned data were imported into MATLAB, epoched into 2 s epochs, and power spectra calculated using Fast Fourier Transformation (FFT). Frequency bins were defined as delta (1–3.75 Hz), theta (4–7.75 Hz), alpha (8–12.75 Hz), and beta (13–30 Hz). Power was defined as the squared radius of the orthogonal sine and cosine amplitudes averaged over window size, and the mean value taken for the frequency band to obtain power density. Power values were log transformed to obtain approximate normality. Alpha peak frequency was determined using the power‐weighted method in accordance with (Malone et al., 2014) between 7 and 14 Hz.
