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Brain & Nervous System140 citations

Mobile phone emissions and human brain excitability.

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Ferreri F, Curcio G, Pasqualetti P, De Gennaro L, Fini R, Rossini PM. · 2006

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Cell phone radiation measurably alters brain excitability patterns during typical call durations, proving non-thermal biological effects occur in real-time.

Plain English Summary

Summary written for general audiences

Researchers used brain stimulation techniques to measure how cell phone radiation affects brain activity in 15 men during 45-minute exposures. They found that GSM phone signals significantly altered brain excitability patterns, reducing the brain's natural inhibitory responses and enhancing facilitation in the exposed hemisphere compared to the unexposed side. This demonstrates that mobile phone emissions can measurably change how brain circuits function, even without causing any temperature increase.

Why This Matters

This study provides compelling evidence that mobile phone radiation creates immediate, measurable changes in brain function at the cellular level. What makes this research particularly significant is the sophisticated methodology - using transcranial magnetic stimulation to precisely measure brain excitability changes in real-time during exposure. The fact that these neurological changes occurred without any temperature increase challenges the wireless industry's long-held position that non-thermal effects don't exist. The reality is that your brain's electrical activity is being altered every time you hold a phone to your head. While we don't yet know the long-term health implications of these excitability changes, the science demonstrates that EMF exposure is biologically active in ways that go far beyond simple heating effects. This adds to a growing body of evidence showing that current safety standards, based solely on thermal effects, may be inadequate to protect human health.

Exposure Information

Specific exposure levels were not quantified in this study. Duration: 45 minutes

Study Details

To test-via Transcranial Magnetic Stimulation (TMS)-the excitability of each brain hemisphere after 'real' or 'sham' exposure to the electromagnetic field (EMF) generated by a mobile phone operating in the Global System for Mobile Communication (GSM).

Fifteen male volunteers attended two experimental sessions, one week apart, in a cross-over, double-...

The intracortical excitability curve becomes significantly modified during real exposure, with SICI ...

These results demonstrate that GSM-EMFs modify brain excitability. Possible implications and applications are discussed.

Cite This Study
Ferreri F, Curcio G, Pasqualetti P, De Gennaro L, Fini R, Rossini PM. (2006). Mobile phone emissions and human brain excitability. Ann Neurol.60(2):188-196, 2006.
Show BibTeX
@article{f_2006_mobile_phone_emissions_and_2079,
  author = {Ferreri F and Curcio G and Pasqualetti P and De Gennaro L and Fini R and Rossini PM.},
  title = {Mobile phone emissions and human brain excitability.},
  year = {2006},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/16802289/},
}
PubMed: 16802289

Cited By (140 papers)

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Quick Questions About This Study

Yes, researchers found that 45 minutes of GSM phone exposure significantly altered brain excitability in 15 men. The study showed reduced natural inhibitory responses and enhanced facilitation in the brain hemisphere exposed to phone radiation, demonstrating measurable changes in how brain circuits function without any temperature increase.
No, cell phone radiation creates asymmetrical brain effects. The 2006 Ferreri study found that GSM signals only altered excitability patterns in the brain hemisphere directly exposed to phone radiation, while the opposite hemisphere remained unchanged, showing radiation's localized impact on brain function.
Brain stimulation techniques like transcranial magnetic stimulation reveal that phone radiation measurably changes brain excitability. Researchers used these methods to detect reduced inhibitory responses and enhanced facilitation in brain circuits during GSM phone exposure, proving radiation can alter neural function without heating tissue.
GSM phone radiation reduces short-interval intracortical inhibition (SICI) and enhances intracortical facilitation (ICF) in exposed brain regions. This 2006 study showed these excitability changes occur during real phone exposure compared to sham exposure, indicating radiation directly impacts how brain neurons communicate with each other.
Yes, phone radiation can alter brain function without any temperature increase. The Ferreri study monitored tympanic temperature and found no heating effects, yet still detected significant changes in brain excitability patterns, proving that non-thermal mechanisms can modify how brain circuits operate during phone use.