Multimodal evidence was found for the searched specific efficacy of Binaural Beats auditory stimulation in the EEG alpha and theta frequency range. Linear trends in EEG relative spectral powers suggest that only the Verum stimulus caused significant decreases in (cortical) arousal. The significant increase of stress-related biomarkers only under Placebo could be interpreted as a sign that the Verum stimulus inhibited processes which naturally occurred under Placebo. Both the Placebo and Verum of the present investigation should be used as a nonverbal culture-free paradigm for neurocientific basic laboratory studies on hypnosis and hypnotizability especially, but also on resting-state networks and related neurocircuitry generally. The ability of the Verum stimulus to decrease arousal levels and induce/boost altered states of consciousness (ASCs) implies applications in several practical-clinical contexts and calls for further field studies. Hans Uve Ptaff
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