highly significantp < 0.001
Correlational analysis indicated highly significant correlations between the electromagnetic HF and EEG activity for the theta range, r = 0.63, p < 0.001, alpha range, r = 0.78, p < 0.001, beta range, r = 0.83, p < 0.001, and gamma range, r = 0.75, p < 0.001.