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Exposure to pulsed high-frequency electromagnetic field during waking affects human sleep EEG.
Institute of Pharmacology and Toxicology, University of Zürich, Switzerland.
The aim of the study was to investigate whether the electromagnetic field (EMF) emitted by digital radiotelephone handsets affects brain physiology. Healthy, young male subjects were exposed for 30 min to EMF (900 MHz; spatial peak specific absorption rate 1 W/kg) during the waking period preceding sleep. Compared with the control condition with sham exposure, spectral power of the EEG in non-rapid eye movement sleep was increased. The maximum rise occurred in the 9.75-11.25 Hz and 12.5-13.25 Hz band during the initial part of sleep. These changes correspond to those obtained in a previous study where EMF was intermittently applied during sleep. Unilateral exposure induced no hemispheric asymmetry of EEG power. The present results demonstrate that exposure during waking modifies the EEG during subsequent sleep. Thus the changes of brain function induced by pulsed high-frequency EMF outlast the exposure period.
PMID: 11059895 [PubMed - indexed for MEDLINE]
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Cited by 4 PubMed Central articles
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Sleep homeostasis and cortical synchronization: III. A high-density EEG study of sleep slow waves in humans.
Riedner BA, Vyazovskiy VV, Huber R, Massimini M, Esser S, Murphy M, Tononi G.
Sleep. 2007 Dec 1; 30(12):1643-57.
[Sleep. 2007]
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ReviewSource of funding and results of studies of health effects of mobile phone use: systematic review of experimental studies.
Huss A, Egger M, Hug K, Huwiler-Müntener K, Röösli M.
Environ Health Perspect. 2007 Jan; 115(1):1-4.
[Environ Health Perspect. 2007]
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TMS-induced cortical potentiation during wakefulness locally increases slow wave activity during sleep.
Huber R, Esser SK, Ferrarelli F, Massimini M, Peterson MJ, Tononi G.
PLoS One. 2007 Mar 7; 2(3):e276. Epub 2007 Mar 7.
[PLoS One. 2007]
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