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Modulation of brain functional connectivity in healthy young adults following GSM radiofrequency exposure: A magnetoencephalography and magnetic resonance imaging study

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Iranfar S, Wallace J, Selmaoui B, Yahia-Cherif L · 2025

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Real GSM-900 MHz exposure significantly altered intra-hemispheric brain functional connectivity in healthy young adults.

Plain English Summary

Summary written for general audiences

The study aimed to test whether GSM radiofrequency exposure modulates brain functional connectivity. Healthy young adults were exposed to GSM signals at 900 MHz, modulated at 217 Hz with a maximum power of 2 W. Real exposure produced significant alterations in intra-hemispheric functional connectivity, especially in right-hemisphere regions such as the transverse temporal, entorhinal, insula, and posterior cingulate.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 900 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 900 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Cite This Study
Iranfar S, Wallace J, Selmaoui B, Yahia-Cherif L (2025). Modulation of brain functional connectivity in healthy young adults following GSM radiofrequency exposure: A magnetoencephalography and magnetic resonance imaging study.
Show BibTeX
@article{iranfar_s_wallace_j_selmaoui_b_yahia_cherif_l_ce3276,
  author = {Iranfar S and Wallace J and Selmaoui B and Yahia-Cherif L},
  title = {Modulation of brain functional connectivity in healthy young adults following GSM radiofrequency exposure: A magnetoencephalography and magnetic resonance imaging study},
  year = {2025},
  doi = {10.1016/j.neuroscience.2025.11.007},
  
}
DOI: 10.1016/j.neuroscience.2025.11.007PubMed: 41203108

Quick Questions About This Study

Participants were exposed to GSM signals at 900 MHz, modulated at 217 Hz with a maximum power of 2 W.
Right-hemisphere regions including the transverse temporal, entorhinal, insula, and posterior cingulate were modulated.
Pre- and post-exposure magnetoencephalographic recordings were normalized and connectivity was calculated using the corrected imaginary phase-locking value.
Real GSM-900 MHz exposure produced significant alterations in intra-hemispheric functional connectivity compared with sham.