Figure 7

Exposure system (a), exposure setup (b) and experimental protocol (c). Both mobile phones looked the same, but their electromagnetic radiation field was different. One of them was placed against the left ear with a tubular tissue bandage during the exposure. Each recording session included three phases: the baseline phase, with 12 min and 30 s of magnetoencephalography (MEG) and electroencephalography (EEG) simultaneously recorded and 12 min and 30 s of EEG recording; the exposure phase with 25 min and 30 s of EEG recording; the post-exposure phase with 25 min and 30 s of MEG and EEG combined recordings. Recording runs were performed with 3 min of eyes-open (EO) and eyes-closed (EC) sequences in alternation. After each run there was 30 s pause. Electrocardiogram (ECG) and electro-oculogram (EOG) were simultaneously recorded. Four saliva samples were collected (Sal 1, Sal 2, Sal 3, Sal 4).