ID Number		2074
Study Type		Human / Provocation
Model		450, 900, 1800 MHz (CW, GSM) exposure to humans and analysis of auditory evoked brainstem EEG responses and event related potentials (ERPs).
Details		Human volunteers (n = 45) were exposed to 450, 935, or 1800 MHz (analog, GSM) for 20 minutes using mobile phones held to the head as exposure sources. Before, during, and immediately after exposures, auditory evoked potential EEG recordings were made. The authors report no effect of RF exposure on brain responses to auditory stimuli. AUTHORS' ABSTRACT: Bak et al. 2010 (IEEE #5630): OBJECTIVES: The primary aim of this work was to assess the effect of electromagnetic field (EMF) from the GSM mobile phone system on human brain function. The assessment was based on the assay of event related potentials (ERPs). MATERIAL AND METHODS: The study group consisted of 15 volunteers, including 7 men and 8 women. The test protocol comprised determination of P300 wave in each volunteer during exposure to the EMF. To eliminate possible effects of the applied test procedure on the final result, the test was repeated without EMF exposure. P300 latency, amplitude, and latency of the N1, N2, P2 waves were analysed. RESULTS: The statistical analysis revealed an effect of EMF on P300 amplitude. In the experiment with EMF exposure, lower P300 amplitudes were observed only at the time in which the volunteers were exposed to EMF; when the exposure was discontinued, the values of the amplitude were the same as those observed before EMF application. No such change was observed when the experiment was repeated with sham exposure, which may be considered as an indirect proof that lower P300 amplitude values were due to EMF exposure. No statistically significant changes were noted in the latencies of the N1, N2, P2 waves that precede the P300 wave, nor in the latency of the P300 itself. CONCLUSIONS: The results suggest that exposure to GSM EMF exerts some effects on CNS, including effects on long latency ERPs.
Findings		Effects
Status		Completed With Publication
Principal Investigator		Nofer Inst Occup Med, Lodz, Poland - zmyslmar@imp.lodz.pl
Funding Agency		Private/Instit.
Country		POLAND
References		Bak, M et al. Int J Occup Med Environ Health, (2003) 16:201-208 Bak , M et al. Int J Occup Med Environ Health., (2010) 23:191-199
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