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Related Concept Videos

Brain Imaging01:14

Brain Imaging

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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
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Brain Waves01:23

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Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:
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Author Spotlight: Low-Cost Electroencephalographic Recording System Combined with a Millimeter-Sized Coil to Transcranially Stimulate the Mouse Brain In Vivo
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Millimeter-wave high frequency 5G (26 GHz) electromagnetic fields do not modulate human brain electrical activity.

Lisa Michelant1, Tamara Baz1, Amandine Carrie2

  • 1Department of Experimental Toxicology and Modeling (TEAM), Institut National de l'Environnement Industriel et des Risques (INERIS), Parc Technologique Alata, BP 2, 60550 Verneuil-en-Halatte, France; PériTox laboratory (UMR_I 01), INERIS/UPJV, INERIS, Verneuil en Halatte, France.

Environmental Research
|November 20, 2025
PubMed
Summary
This summary is machine-generated.

This study found no changes in human brain electrical activity (EEG) after exposure to 26 GHz 5G millimeter-wave frequencies. The controlled experiment provides initial safety data for 5G deployment.

Keywords:
26 GHz5GBrain electrical activityEEGHumanRF-EMF exposureSpectral power

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Area of Science:

  • Neuroscience
  • Electromagnetic Field (EMF) Research
  • Telecommunications Engineering

Background:

  • 5G networks use millimeter-wave (mmWave) frequencies like 26 GHz.
  • Concerns exist regarding potential neurophysiological effects of mmWave exposure.
  • Controlled studies on 26 GHz exposure and human brain activity are lacking.

Purpose of the Study:

  • To investigate the effects of 26 GHz electromagnetic field (EMF) exposure on human electroencephalogram (EEG) activity.
  • To assess potential neurophysiological changes in healthy adults exposed to 5G mmWave frequencies.
  • To provide preliminary safety data for the deployment of 5G technology.

Main Methods:

  • A randomized, triple-blind, crossover study involving 31 healthy adults.
  • Participants underwent two sessions: real 26 GHz exposure (26.5 min at 2 V/m) and sham exposure.
  • EEG was recorded before, during, and after exposure, with analysis of delta, theta, alpha, and beta frequency bands.

Main Results:

  • No significant modulation of EEG power spectral density was observed in any frequency band.
  • Statistical analysis showed no main effects or interactions for exposure conditions.
  • This study is the first controlled investigation of 26 GHz 5G effects on human EEG.

Conclusions:

  • Exposure to 26 GHz EMF under regulatory-compliant conditions did not alter human EEG activity.
  • Findings suggest no detectable changes in brain electrical activity related to 26 GHz 5G exposure.
  • Further research is warranted across diverse populations and exposure scenarios for comprehensive safety assessment.