NDLI: Comparison of the effects of continuous and pulsed mobile phone like RF exposure on the human EEG

Content Provider	Springer Nature Link
Author	Perentos, N. Croft, R. J. McKenzie, R. J. Cvetkovic, D. Cosic, I.
Copyright Year	2007
Abstract	It is not clear yet whether Global System for Mobiles (GSM) mobile phone radiation has the ability to interfere with normal resting brain function. There have been reports that GSM exposure increases alpha band power, and does so only when the signal is modulated at low frequencies (Huber, R., Treyer, V., Borbely, A. A., Schuderer, J., Gottselig, J. M., Landolt, H.P., Werth, E., Berthold,T., Kuster, N., Buck, A and Achermann, P. Electromagnetic fields, such as those from mobile phones, alter regional cerebral blood flow and sleep and waking EEG. J Sleep Res 11, 289-295, 2002.) However, as that research employed exposure distributions that are not typical of normal GSM handset usage (deep brain areas were overexposed), it remains to be determined whether a similar result patterning would arise from a more representative exposure. In this fully counterbalanced cross-over design, we recruited 12 participants and tried to replicate the modulation linked post exposure alpha band power increase described above, but with an exposure source (dipole antenna) more closely resembling that of a real GSM handset. Exposures lasted for 15 minutes. No changes to alpha power were found for either modulated or unmodulated radiofrequency fields, and thus we failed to replicate the above results. Possible reasons for this failure to replicate are discussed, with the main reason argued to be the lower and more representative exposure distribution employed in the present study. In addition we investigated the possible GSM exposure related effects on the non-linear features of the resting electroencephalogram using the Approximate Entropy (ApEn) method of analysis. Again, no effect was demonstrated for either modulated or unmodulated radiofrequency exposures.
Starting Page	274
Ending Page	280
Page Count	7
File Format	PDF
ISSN	01589938
Journal	Australasian Physics & Engineering Sciences in Medicine
Volume Number	30
Issue Number	4
e-ISSN	18795447
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-01-01
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	EEG GSM ApEn alpha ban Biomedicine general Biophysics and Biological Physics Medical and Radiation Physics Biomedical Engineering Theoretical, Mathematical and Computational Physics
Content Type	Text
Resource Type	Article
Subject	Radiology, Nuclear Medicine and Imaging Physics and Astronomy Biophysics Biomedical Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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