Effect of modulated microwave radiation on human EEG asymmetry |
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Authors: | Anna Suhhova Maie Bachmann Jaanus Lass Deniss Karai Hiie Hinrikus |
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Institution: | (1) Department of Biomedical Engineering, Technomedicum of Tallinn University of Technology, 5 Ehitajate Rd, 19086 Tallinn, Estonia |
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Abstract: | This study is aimed to investigation of the effect of modulated 450 MHz microwave radiation on the EEG inter-hemispheric asymmetry.
Ten cycles of the microwave exposure (1 min off and 1 min on) at fixed modulation frequency were applied on two groups of
healthy volunteers. The first group of 13 subjects was exposed to microwave radiation modulated at 14 Hz and the second group
of 15 subjects at 40 Hz frequency. The peak specific absorption rate (SAR) average over 1 g was 0.303 W/kg. Differences in
SAR between hemispheres were up to 20 dB. Rod antenna was located from the left side of the head. Differences of relative
changes in EEG energy between symmetric channels FP1–FP2, T3–T4, P3–P4 and O1–O2 in exposed and sham conditions were analysed.
The results showed increase in EEG energy from the left side caused by microwave exposure. Statistical analysis done for the
whole group of subjects didn’t reveal significant differences in inter-hemispheres asymmetry between exposed and sham conditions.
However, statistical analysis performed for individual subjects detected significant differences in asymmetry caused by exposure
for 15–35% of individuals. |
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Keywords: | Microwave radiation Modulation EEG analysis Inter-hemispheric asymmetry Individual sensitivity |
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