POST-HYPNOTICALLY STIMULATED SLEEP-TALKING

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Abstract
An experimental subject was given post-hypnotic suggestions (PHS) prior to sleep that he would talk in his sleep without awakening, whenever he would have a natural nocturnal dream, and describe it while it was going on. The subject slept in a private laboratory room containing a microphone leading to a continuously running tape recorder, an intercom, and electrical leads permitting the continuous monitoring of eeg, EOG [extra-ocular graph] and somnilo-quy. Awakenings occurred after rapid eye movement phase [REMP] sleep-speeches resulted in recall of closely corresponding mentation in 87% of cases (N = 8) and the memory of closely corresponding dreams. Awakenings after non-REMP sleep-speeches resulted in recall of closely corresponding mentation of 20% of cases (N = 35). All procedures utilizing PHS''s resulted in marked increased frequency of REMP and non-REMP sleep-speeches; shift in location of bulk of speeches from 1st to 2nd half of night; initiation of speeches during REMPs; and increase in speeches associated with REMPs. Consideration of the subject''s accounts of his experience while describing a "natural" dream, a hypnotic dream, and attendant eeg and eog data, suggest that the psychic state during post-hypnotically suggested sleep-speech contains components of both sleep and post-hypnotic state.

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