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Effect of modulated at different low frequencies microwave radiation on human EEG

Author

Listed:
  • Hiie Hinrikus

    (Technomedicum of Tallinn University of Technology)

  • Maie Bachmann

    (Technomedicum of Tallinn University of Technology)

  • Jaanus Lass

    (Technomedicum of Tallinn University of Technology)

  • Viiu Tuulik

    (Technomedicum of Tallinn University of Technology)

Abstract

This study is aimed to clarify whether effect of low-level microwave radiation on human brain differs at different modulation frequencies. Resting EEG recordings were done on different groups of healthy volunteers. The 450 MHz microwave radiation modulated at 40 and 70 Hz (15 subjects) and 217 and 1,000 Hz (19 subjects) frequencies was applied. The results of our previous study at 7, 14 and 21 Hz modulation were included into analysis. Ten cycles of the exposure (1 min off and 1 min on) at each fixed modulation frequencies were applied. The field power density at the scalp was always 0.16 mW/cm2. Our results showed that microwave exposure increased the EEG energy at EEG frequencies lower or close to the modulation frequency. No effect was detected at EEG frequencies higher than the modulation frequency. Statistically significant changes were caused by exposure in the EEG alpha and beta frequency bands; no significant effect was detected in the theta band. Our results suggest that telecommunication devices with complex spectrum of modulation frequencies like mobile phone can affect all human EEG frequency bands.

Suggested Citation

  • Hiie Hinrikus & Maie Bachmann & Jaanus Lass & Viiu Tuulik, 2009. "Effect of modulated at different low frequencies microwave radiation on human EEG," Environment Systems and Decisions, Springer, vol. 29(2), pages 215-219, June.
    • Handle: RePEc:spr:envsyd:v:29:y:2009:i:2:d:10.1007_s10669-009-9215-7
    DOI: 10.1007/s10669-009-9215-7
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    References listed on IDEAS

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    1. Maie Bachmann & Maksim Säkki & Jaan Kalda & Jaanus Lass & Viiu Tuulik & Hiie Hinrikus, 2005. "Effect of 450 MHz Microwave Modulated with 217 Hz on Human EEG in Rest," Environment Systems and Decisions, Springer, vol. 25(2), pages 165-171, December.
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    Cited by:

    1. Marko S. Markov, 2012. "Impact of physical factors on the society and environment," Environment Systems and Decisions, Springer, vol. 32(2), pages 121-130, June.

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