The American journal of clinical hypnosis
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Randomized Controlled Trial Clinical Trial
Taped therapeutic suggestions and taped music as adjuncts in the care of coronary-artery-bypass patients.
A randomized, single-blinded, placebo-controlled trial examined the benefits of taped therapeutic suggestions and taped music in coronary-artery-bypass patients. Sixty-six patients listened to either suggestion tapes or music tapes, intraoperatively and postoperatively; 29 patients listened to blank tapes intraoperatively and listened to no tapes postoperatively. ⋯ There were no significant differences in these same outcomes between the patients who were helped by the tapes and the patients not helped. These results suggest that if taped therapeutic suggestions have a measurable effect upon cardiac surgery patients, demonstrating this effect will require more detailed patient evaluations to identify subgroups of patients responsive to this type of intervention.
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Randomized Controlled Trial Comparative Study Clinical Trial
The effects of light, temperature, trance length, and time of day on hypnotic depth.
We evaluated predictions derived from the ultradian theory of hypnosis regarding the effects of temperature, light, trance length, and time of day on reported trance depth in 95 college undergraduates. Temperature and light showed no relation to trance depth. However, as predicted by ultradian theory, subjects who were kept in trance for 15 minutes reported greater trance depth than those who experienced a 5-minute trance. ⋯ This latter finding was inconsistent with ultradian theory and prior research. Alternative explanations for this finding are discussed. Overall, the results from the present study do not provide strong support for Rossi's ultradian theory of hypnosis.