Influence of the Interaction of a 900 MHz Signal with Gender on EEG Energy: Experimental Study on the Influence of 900 MHz Radiation on EEG

Abstract

The effects of electromagnetic fields (EMF) emitted by cellular phones on human electroencephalogram (EEG) were studied during an auditory memory task. The experimental method and the experimental setup are introduced as a credible measurement method of EEG. 19 normal subjects (10 women and 9 men) performed the memory task both with and without exposure to a 900 MHz signal, emitted by a dipole antenna placed near the subjects' head. The energy of the EEG signals was calculated at the time domain. A Fourier transform of the EEG signals was done and the EEG energy was also calculated at the frequency domain. As the Parseval's theorem anticipates the energies were identical. The EEG energy was found concentrated at the four basic bands (α (8-13 Hz), β(14-30 Hz), δ (0-4 Hz) and θ (5-7 Hz)). The primary concern of the present study was the gender related influence of EMF on the spectral energy of EEG. The results show evidence of a strong gender-radiation interaction effect on the EEG energy and on the peak amplitudes within each of the four rhythms. Without radiation the spectral power of males is greater than of females, while under exposure the situation is reversed. Under the influence of EMF the spectral power of the males EEG is decreased while that of the females is increased. In conclusion both the baseline EEG and the changes effected to the EEG power spectrum under the influence of EMF seem to be gender dependent.

Influence of a 1,800 MHz electromagnetic field on the EEG energy

“…Hence, according to the results of this and the previous studies (Papageorgiou et al 2004;Nanou et al 2005), it seems that the effect of the exposure to EMF on EEG is gender dependent. The studies under way of the working group include the use of a modulated radiation signal.…”

“…At the end of the number sequence presentation, the same signal tone was repeated. The signals were recorded for a 1,500 ms interval, which means 500 ms before the warning stimulus (EEG) and 1,000 ms after that (ERP), as described in previous articles (Papageorgiou et al 2004;Nanou et al 2005). The numbers were recalled by the subject in the same (low frequency tone) or in the opposite order (high frequency tone) than that presented to the participant.…”

“…This procedure was done separately for each EMF condition. The final data for analysis for each subject and condition consisted of 1,500 amplitude values for each electrode, expressed in microvolts corresponding to the 1,500 ms of the time period (Papageorgiou et al 2004;Nanou et al 2005).…”

“…The results showed that males exposed to EMF made fewer errors than those exposed to an inactive phone condition, while females were largely unaffected. In previous studies of our team (Papageorgiou et al 2004;Nanou et al 2005), the subjects' EEG was recorded during the anticipatory period of performance in an auditory Wechsler test for 500 ms, either under real EMF (900 MHz CW with a mean power at 0.64 W) or under sham exposure. The EEG spectral energy of males was greater than that of females, while EMF exposure decreased the EEG energy of males and increased that of females.…”

EEG bioeffects on cochlear deaf from cellular phones

“…The energy was found concentrated at the four basic bands. The results show evidence of a strong gender radiation interaction effect on the EEG energy and on the peak amplitudes within each of the four rhythms (Nanou et al 2005). The EEG analysis performed with three different methods showed that statistically significant changes occur in the EEG rhythms, energy and dynamics between 12 and 30% of subjects.…”