Wind turbine noise (WTN) influences people’s perception of the restorative effects of sleep, and also has a small but significant effect on dream sleep, otherwise known as REM (rapid eye movement) sleep, a study at the University of Gothenburg, Sweden, shows. A night of WTN resulted in delayed and shortened REM sleep.
Knowledge of how sleep is affected by WTN has been limited to date. Research involving physiological study of its impact using polysomnography, the top-ranking method of sleep recording, is lacking.
Studies carried out in the Sound Environment Laboratory at the Department of Occupational and Environmental Medicine in Gothenburg are adding new knowledge in the field. Polysomnography involves using electrodes attached to the head and chest to record brain activity, eye movement, heart rate, etc. during sleep.