Journal
BIOELECTROMAGNETICS
Volume 34, Issue 8, Pages 589-598Publisher
WILEY-BLACKWELL
DOI: 10.1002/bem.21809
Keywords
radio frequency exposure; electroencephalogram (EEG); sleep parameter; power spectrum; human sleep
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Funding
- Ministry of Internal Affairs and Communications, Tokyo, Japan
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In this study, we investigated subjective and objective effects of mobile phones using a Wideband Code Division Multiple Access (W-CDMA)-like system on human sleep. Subjects were 19 volunteers. Real or sham electromagnetic field (EMF) exposures for 3h were performed before their usual sleep time on 3 consecutive days. They were exposed to real EMF on the second or third experimental day in a double-blind design. Sleepiness and sleep insufficiency were evaluated the next morning. Polysomnograms were recorded for analyses of the sleep variables and power spectra of electroencephalograms (EEG). No significant differences were observed between the two conditions in subjective feelings. Sleep parameters including sleep stage percentages and EEG power spectra did not differ significantly between real and sham exposures. We conclude that continuous wave EMF exposure for 3h from a W-CDMA-like system has no detectable effects on human sleep. Bioelectromagnetics 34:589-598, 2013. (c) 2013 Wiley Periodicals, Inc.
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