Prof. Marc Victorovich Kirzon, the PhD supervisor of A.Kaplan. (The scientific supervisor of M.Kirzon was, in his turn, A.A.Ukhtomsky, the leader of one of the main Russian classic neurophysiological schools, author of the notion of dominanta.)
EEG in meditation. Theta rhythm is found mainly in central, temporal and frontal areas. Its episodes (encircled by double line) may appear at the same time when alpha rhythm dominate in occipital and parietal areas.