Abstract

Study Overview

With the prevalence of wireless communication, the common use of mobile phones has exponentially increased our exposure to electromagnetic fields (EMF). This research investigates how mobile phones' radiofrequency (RF-EMF) influences human brainwaves during rest.

Purpose

• Examine the potential impacts of RF-EMF on resting electroencephalogram (EEG) signals in humans.

Materials and Methods

The study involved twenty-one healthy volunteers exposed to the Global System for Mobile Communications (GSM) signal at 900 MHz. The observed specific absorption rates (SAR) were 0.49 W/kg and 0.70 W/kg for 10 g and 1 g of tissue, respectively.

Findings

• No notable effects on delta and beta rhythms of the resting EEG.
• Theta brainwaves were significantly influenced during RF-EMF exposure, showing variances with different eye conditions (open vs. closed).

Conclusions

The alteration of EEG theta rhythm during acute RF-EMF exposure suggests possible changes in brain function with EMF exposure, highlighting the need for further study on long-term effects especially in sensitive or high-risk groups.