Effects of electromagnetic fields from long-term evolution on awake electroencephalogram in healthy humans

Publication date: Available online 25 January 2020Source: Neuroscience ResearchAuthor(s): Setsu Nakatani-Enomoto, Madoka Yamazaki, Keisuke Nishiura, Hiroyuki Enomoto, Yoshikazu UgawaAbstractMobile phones are indispensable for daily life, and the adverse effects of the electromagnetic field (EMF) emitted by mobile phones have been a great concern. We studied the effects of long-term evolution (LTE) -like EMF for 30 min on an awake electroencephalogram (EEG). Thirty-eight healthy volunteers, aged 20 to 36 years old, participated in this study. The maximum local SAR (specific absorption rate) averaged over 10-g mass was 2.0 W/kg. The EEG was recorded before and after real or sham exposures. The effects of exposure conditions (real or sham) and the recording time (before, during, and after exposure) on each EEG power spectrum of θ, α, and β frequency ranges were analyzed. The θ and α band waves were enhanced after both exposure conditions. These results may be explained by the participants’ drowsiness during the EEG recording in both exposures. We conclude that an LTE-like exposure for 30 min in this study showed no detectable harmful effects on awake EEGs in healthy humans.
Source: Neuroscience Research - Category: Neuroscience Source Type: research