Browse > Article

Evaluation of Thermal Comfort during Sleeping in Summer - Part III : About Indoor Air Temperatures Rise -  

Kim Dong-Gyu (Department of Mechnical Engineering, Pukyung National University)
Kum Jong-Soo (Department of Mechnical Engineering, Pukyung National University)
Kim Se-Hwan (Department of Building System Engineering, Dongeui University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.18, no.7, 2006 , pp. 535-540 More about this Journal
Abstract
This study was performed In evaluate sleep efficiencies and conditions for comfortable sleep based on the analysis of Physiological signals under variations in thermal conditions. Five female subjects who have similar life cycle and sleep patterns were participated for the sleep experiment. It was checked whether they had a good sleep before the night of experiment. EEGs were obtained from C3-A2 and C4-A1 electrode sites and EOGs were acquired from LOC (left outer canthus) and ROC (right outer canthus) for REM sleep detection. Sleep stages were classified, then TST (total sleep time), SWS (slow wave sleep) latency and SWS/TST were calculated for the evaluation of sleep efficiencies on thermal conditions. TST was defined as an amount of time from sleep stage 1 to wakeup. SWS latency was from light off time to sleep stage 3 and percentage of SWS over TST was calculated for the evaluation of sleep quality and comfort sleep under thermal conditions. As result, the condition which raise a room temperature provided comfortable sleep.
Keywords
TST; SWS latency; SWS/TST;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Ogino, H., Nishida, Y., Tajima, A., Yamamoto, T. and Ishi, K., 1987, The effects of the temperature of the bed upon sleep (Part 2), The Eleventh Symposium on Man-Thermal Environment System, pp. 10-13
2 Muzet, A. and Ehrhart, J., 1983, Rem sleep and ambient temperature in man, J. of the Neuroscience, Vol. 18, pp. 117-126
3 Rechtschaffen, A. and Kales, A., 1968, A manual of standardized terminology techniques and scoring systems for sleep stages of human subjects. Los Angeles Brain Information Service/Brain Research Institute, UCLA, 1968
4 Haskell, E. H. and Palca, J. W., 1981, The effects of high and low ambient temperature on human sleep, Electroencephalography and Clinical Neurophysiology, pp.494-501
5 Yanase, T., 1981, A condition for good sleep managements for sleep, Sleepless, Yuhikaku, Tokyo, pp, 275-285