Investigation of brain potentials in sleeping humans exposed to the electromagnetic field of mobile phones

An investigation was made of 8-hour EEG tracings of sleeping humans exposed to the electromagnetic field of a GSM-standard mobile phone. To analyze th e EEG-patterns, manual scoring, nonlinear dynamics, and spectral analysis w ere employed. It was found that, when human beings were exposed to the elec tromagnetic field of a cellular phone, their cerebral cortex biopotentials revealed an increase in the alpha -range power density as compared to the p lacebo experiment. It was also found that the dimension of EEG correlation dynamics and the relation of sleep stages changed under the influence of th e electromagnetic field of a mobile phone.