Free Content A 50-Hz electromagnetic field impairs sleep

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Abstract:

Summary

In view of reports of health problems induced by low frequency (50–60Hz) electromagnetic fields (EMF), we carried out a study in 18 healthy subjects, comparing sleep with and without exposure to a 50Hz/1μTesla electrical field. We found that the EMF condition was associated with reduced: total sleep time (TST), sleep efficiency, stages 3+4 slow wave sleep (SWS), and slow wave activity (SWA). Circulating melatonin, growth hormone, prolactin, testosterone or cortisol were not affected. The results suggest that commonly occurring low frequency electromagnetic fields may interfere with sleep.

Keywords: EMF; TST; melatonin; slow wave sleep

Document Type: Research Article

DOI: http://dx.doi.org/10.1046/j.1365-2869.1999.00100.x

Publication date: March 1, 1999

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