Assessment of Electrical Brain Activity of Healthy Volunteers Exposed to 3.5 GHz of 5G Signals within Environmental Levels: A Controlled–Randomised Study

Abstract

Overview

The study examines the bio-physiological effects of 3.5 GHz frequency, notably in the context of the newly deployed 5G radio frequencies and the ongoing discussions about their potential health impacts.

Methodology

• The study involved 34 healthy volunteers participating in controlled exposure sessions in an electrically shielded room.
• Exposures were antenna-emitted with an electrical field intensity of 2 V/m, which mirrors outdoor levels.
• Volunteers underwent sessions of both real and sham exposures; each included about 26 minutes of exposure followed by 17 minutes of observation.

Findings

Analysis of wake electroencephalograms (EEG) examined power spectral densities (PSDs) in different brain wave bands (beta, alpha, theta, delta) under conditions with eyes open and closed. Key findings include:

• Overall, changes in brain wave activity were non-significant, with minor exceptions in alpha, theta, and delta bands depending on the condition (eyes open or closed).
• This suggests that the exposure setting used does not substantially alter brain activity in healthy adults.

Conclusion

Despite societal concerns about 5G health impacts, this study shows no significant effect on brain activity within the regulatory levels and exposure parameters used. This marks it as a pioneering human EEG lab-controlled study into 5G effects on health at environmental exposure levels.