Modulation type: pulsed
Exposure duration: continuous for 250 s?
|Setup||The EEG activity was recorded for 250 s per phase using a 32 electrode helmet.|
|Sham exposure||A sham exposure was conducted.|
|Additional info||The experimental session consisted of two sequential recording phases: 1) no RF emission and 2) maximum power emission. The control session consisted of the same two phases but without emission in any phase.|
No parameters are specified for this exposure.
Under radiofrequency irradiation the spectral arrangement of the EEG activity was altered for healthy subjects as well as epileptic patients. For the healthy subjects, a significant decrease of the EEG signal was observed for all frequency bands and more precisely on occipital electrodes for the alpha wave. For the epileptic patients, it was the opposite since the GSM exposure produced an increase of EEG signal energy in all frequency bands and without any local difference.
These results suggest that GSM mobile phones may have a biological effect on EEG signals.