Non-thermal continuous and modulated electromagnetic radiation fields effects on sleep EEG of rats
Mohammed HS, Fahmy HM, Radwah NM, Elsayed AA · 2013
View Original AbstractRats exposed to modulated 900 MHz radiation for one month showed increased REM sleep latency, indicating altered sleep cycles.
Plain English Summary
Researchers investigated the effect of chronic low-level non-thermal electromagnetic radiation on sleep EEG in rats. They used two types of radiation fields: 900 MHz unmodulated and 900 MHz modulated at 8 and 16 Hz, with exposure for one month at one hour per day. EEG power spectral analyses revealed that REM sleep was more susceptible to modulated radiofrequency radiation than slow wave sleep. The latency of REM sleep increased due to radiation exposure, indicating a change in the ultradian rhythm of normal sleep cycles. The authors concluded that exposure to electromagnetic radiation in awake animals can alter subsequent sleep structure and suggested cumulative irreversible effects.
Why This Matters
The authors stated that REM sleep is considered more sensitive to RF radiation than SWS based on sleep EEG data analyses. They noted that using frequencies close to biological frequencies could result in more adverse effects than frequencies far from biological frequencies. The increase in REM latency after irradiation was said to denote a change in sleep pattern and provide evidence of adverse effects on brain physiology. The researchers called for further studies to explore the mechanism of interaction between electromagnetic radiation fields and biological phenomena.
Exposure Information
Specific exposure levels were not quantified in this study. The study examined exposure from: 900 MHz unmodulated wave and 900 MHz modulated at 8 and 16 Hz waves Duration: 1 month (1 h/day)
Study Details
In the present study, the alteration in the sleep EEG in rats due to chronic exposure to low-level non-thermal electromagnetic radiation was investigated
Two types of radiation fields were used; 900 MHz unmodulated wave and 900 MHz modulated at 8 and 16 ...
EEG power spectral analyses of exposed and control animals during slow wave sleep (SWS) and rapid ey...
In the present study, it can be concluded that exposure to electromagnetic radiation in awake animals can alter their subsequent sleep structure. The REM sleep considered to be more sensitive for RF radiation than SWS as indicated from sleep EEG data analyses. The using of frequencies similar or close to the biological frequencies could result in more adverse effect than other frequencies which lie far from biological frequencies. The increase in REM latency after irradiation denotes change in the sleep pattern of the exposed animals and provides evidence about the adverse effect of non-thermal electromagnetic radiation fields on brain physiology. Further studies are needed to explore the mechanism of interaction between electromagnetic radiation fields and the biological phenomena.
Show BibTeX
@article{hs_2013_nonthermal_continuous_and_modulated_1514,
author = {Mohammed HS and Fahmy HM and Radwah NM and Elsayed AA},
title = {Non-thermal continuous and modulated electromagnetic radiation fields effects on sleep EEG of rats},
year = {2013},
url = {https://www.sciencedirect.com/science/article/pii/S2090123212000343},
}