Human brain wave activity during exposure to radiofrequency field emissions from mobile phones.
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Date
2004-03-03
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Abstract
The aim of this study was to determine whether there is an effect of mobile phone electromagnetic field emissions on the human electroencephalograph EEG EEG recordings from ten awake subjects were taken during exposure to radiofrequency RF emissions from a mobile phone positioned behind the head Two experimental trials were conducted In the first trial RF exposures were generated by a GSM mobile phone with the speaker disabled and configured to transmit at full radiated power During the second trial exposures were generated by a non modified GSM mobile phone in active standby mode For each trial subjects were exposed in five minute intervals to a randomized interrupted sequence of five active and five sham exposures The experiment was conducted under single blind conditions The average EEG band power in active exposure recordings was compared to corresponding sham recordings Statistical tests indicated significant difference in the full power mode trial within the EEG alpha 8 13 Hz and beta 13 32 Hz bands A subsequent statistical analysis of median spectral power in discrete EEG rhythms revealed significant differences in 7 of the 32 distinct frequencies overall In conclusion the results of this study lend support to EEG effects from mobile phones activated in talk mode