Huber R, Graf T, Cote K A, Wittmann L, Gallmann E, Matter D, Schuderer J, Kuster N, Borbély A A, Achermann P
Institute of Pharmacology and Toxicology, University of Zürich, Switzerland.
Neuroreport. 2000 Oct 20;11(15):3321-5. doi: 10.1097/00001756-200010200-00012.
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.
该研究的目的是调查数字无线电话手机发出的电磁场（EMF）是否会影响大脑生理机能。健康的年轻男性受试者在睡前清醒期间暴露于EMF（900兆赫；空间峰值比吸收率1瓦/千克）30分钟。与假暴露的对照条件相比，非快速眼动睡眠期间脑电图的频谱功率增加。最大增幅出现在睡眠初期的9.75 - 11.25赫兹和12.5 - 13.25赫兹频段。这些变化与先前一项研究的结果一致，在该研究中，EMF在睡眠期间间歇性施加。单侧暴露未引起脑电图功率的半球不对称。目前的结果表明，清醒期间的暴露会改变随后睡眠期间的脑电图。因此，脉冲高频EMF引起的脑功能变化在暴露期之后仍会持续。
