N.N. Lebedeva, L.A. Potulova, R.A. Maragey

The rhythm activity dynamics of human cerebral cortex under mobile phone EMF exposure was studied. 28 volunteers (healthy, 18-60 years old) have participated in the experiments. All of them became mobile phone users in the experiments. EEG records have been carried out 4 times for each volunteer: background, in 3, 6 and 9 weeks after phone use beginning. EEG was recorded in 16 electrodes according to the international 10-20 system (F1, F2, F3, F4, F7, F8, C3, C4, P3, P4, T3, T4, T5, T6, O1, O2) Against A1  A2 As The Reference. To estimate EEG changes, we use the spectral-correlation analyze (FFT) and calculated the absolute spectral amplitude in the -, -, -, and -ranges. It was shown the physiological concernment of mobile phone EMF and the pattern of cerebral cortex rhythm activity has been changed during 9 weeks after phone use beginning. Alpha-rhythm was the most susceptible of mobile phone EMF exposure but EEG-reaction type was determined by human rhythms activity features. All volunteers split up into 4 groups: on the basis of EEG type (with pronounced - rhythm and without pronounced - rhythm («diffusive» EEG) in EEG spectra) and on the basis of EEG rhythms power - high or low amplitude. The most «adaptive» group (expressed EEG reactions in 3 weeks and background return after 9 weeks) consists of volunteers with pronounced -rhythm and high EEG rhythms power; the least «adaptive» group consists of volunteers with «diffusive» EEG and low EEG rhythms power - inverse EEG rhythms dynamics in 3 and 6 weeks and background failure to return after 9 weeks.