Electroencephalograms (EEGs) and DC electrooculograms (EOGs) were recorded during Transcendental Meditation periods for 8 experienced Ss. The records, scored blind showed that all but 2 Ss spent considerable portions of their meditation periods in unambiguous physiological sleep.
No takes yet. Share an insight, caveat, or question.
Younger et al. (1975) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: