This study was supported, in part, by a special grant from the Naval Undersea Research and Development Center, and by Department of the Navy, Bureau of Medicine and Surgery, under Task No. MF12.524.004-9008DA5G. The authors thank M. T. Austin, R. P. Hilbert, D. F. Reinhart, D. A. Irwin, and J. A. Yale for their efforts during collection of the sleep data. The opinions and assertions contained herein are the private ones of the authors and are not to be construed as official or as reflecting the views of the Navy Department.
Effects of Long Term Exposure to Tone Pulse Noise on Human Sleep
Version of Record online: 30 JAN 2007
Volume 10, Issue 4, pages 369–376, July 1973
How to Cite
Townsend, R. E., Johnson, L. C. and Muzet, A. (1973), Effects of Long Term Exposure to Tone Pulse Noise on Human Sleep. Psychophysiology, 10: 369–376. doi: 10.1111/j.1469-8986.1973.tb00794.x
Dr. Muzet is now at Centre d'Etudes Bioclimatiques du C.N.R.S., Strasbourg, France.
- Issue online: 30 JAN 2007
- Version of Record online: 30 JAN 2007
- Tone pulse noise;
- Sleep stages;
- Body movement;
- Sleep logs
Electrophysiological and self-report data were obtained from 10 and 20 Ss, respectively, during 15 days of baseline, 30 days of 24-hr per day exposure to a 660 msec, 3.5K Hz tone pulse with a 22 sec interstimulus interval (10 days each at 80, 85, and 90 dB), and during a 10-day post-exposure period. A self-reported increase in difficulty falling asleep was not substantiated by objective sleep latency measures. Changes in total hours of sleep, number of awakenings, and percent time for sleep stages were of small magnitude and not consistently related to stimulus intensity. All 10 monitored Ss gave clear EEG and autonomic responses to the stimulus, with no evidence of response extinction over the 30-day exposure period. There was no change in average all-night heart rate. Total number of body movements during the night did not change. However, the movements that did occur, tended to be triggered by the stimulus, with most movements closely following the tone pulse. The youth and good health of the Ss, and the 24-hr per day exposure, favoring rapid adaptation to the stimulus, are suggested to account for the lack of disruption of sleep.