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eye movements were noted (although eye movements were not measured). Sections of Monroe’s EEG during this reported out-of-body experience were analyzed for frequency differences both within and between hemispheres. An analysis of variance was run, with the data divided into beginning, middle, and end sections, each section having 29 values for a total of 290 seconds. Two groups were analyzed: right and left hemispheres. There seemed to be no significant frequency differences between hemispheres, although the amplitude differences were obvious. There were significant differences between the beginning and middle, the middle and end, and the beginning and end sections of Monroe’s EEG in each hemisphere. This latter difference (F = 41 47 and F = 59.08; p < .001) showed that the “before” and “after” OBE frequencies were much higher than the “during” OBE frequencies. Standard deviations were also significantly smaller with the middle section as compared to the beginning and end sections. A power spectral analysis of OBE periods showed power peaks at 4–5 Hertz with very little activity above 10 Hertz. What are we to conclude from this experiment? Although the observational findings were more provocative than the EEG findings, they are less easily explained. Clearly, Monroe was in a state of deep relaxation. In addition, when in his out-of-body state there is a frequency slowing, with an interesting shift in power to a 4–5 Hertz range in the theta-delta transitional zone. This electrophysiological borderline state correlates closely with Tart’s findings and Harary’s reference to borderline sleep-wakefulness states * Journeys Out of the Body. Garden City, N.Y.: Doubleday & Company, Inc., 1971;
Anchor Press edition, 1977.