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Nonlinear changes in brain electrical activity due to cell phone radiation

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Marino AA, Nilsen E, Frilot C · 2003

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Cell phone radiation altered brain electrical activity in 90% of test animals within milliseconds of exposure at typical phone power levels.

Plain English Summary

Summary written for general audiences

Researchers exposed rabbits to cell phone radiation (800 MHz) positioned near their heads, similar to how humans use phones, and measured brain electrical activity using EEG recordings. They found that 9 out of 10 animals showed significant changes in brain wave patterns within 100 milliseconds of exposure, with increased randomness in brain activity that lasted about 300 milliseconds. This demonstrates that cell phone radiation can directly alter brain function when absorbed by brain tissue.

Why This Matters

This study provides compelling evidence that cell phone radiation produces measurable, immediate changes in brain electrical activity. What makes this research particularly significant is the rigorous experimental design - the researchers ruled out equipment interference by testing dead animals (no effect) and showed the effect was location-specific by moving the antenna away from the head (no effect). The 600 mW power level used falls within the range of typical cell phone emissions during calls. The fact that brain changes occurred within 100 milliseconds of exposure suggests a direct biological response rather than a heating effect. While this was an animal study, the implications for human brain function during phone calls are clear and concerning, especially given that billions of people hold these devices against their heads daily.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 800 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 800 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. The study examined exposure from: 800 MHz band cellular telephone

Study Details

We studied the effect of an electromagnetic field from a cellular telephone on brain electrical activity, using a novel analytical method based on a nonlinear model.

The electroencephalogram (EEG) from rabbits was embedded in phase space and local recurrence plots w...

When the rabbits were exposed to the radiation from a standard cellular telephone (800 MHz band, 600...

We conclude that, in normal use, the fields from a standard cellular telephone can alter brain function as a consequence of absorption of energy by the brain.

Cite This Study
Marino AA, Nilsen E, Frilot C (2003). Nonlinear changes in brain electrical activity due to cell phone radiation Bioelectromagnetics 24(5):339-346, 2003.
Show BibTeX
@article{aa_2003_nonlinear_changes_in_brain_2412,
  author = {Marino AA and Nilsen E and Frilot C},
  title = {Nonlinear changes in brain electrical activity due to cell phone radiation},
  year = {2003},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/12820291/},
}
PubMed: 12820291

Cited By (64 papers)

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Quick Questions About This Study

Brain wave changes occurred within 100 milliseconds of 800 MHz cell phone radiation exposure in rabbits. The 2003 Marino study found that 9 out of 10 animals showed significant brain electrical activity changes that lasted approximately 300 milliseconds after exposure began.
No brain wave changes occurred when researchers moved the 800 MHz cell phone antenna from the head to the chest area. This 2003 study demonstrated that brain tissue absorption, not just radiation presence, determines whether cell phone signals alter brain function.
Yes, 800 MHz cell phone radiation increased randomness in brain wave patterns in 9 out of 10 rabbits tested. The study found that standard cellular telephone fields (600 mW maximum power) significantly altered the organized electrical activity measured by EEG recordings.
No effects occurred when the same 800 MHz radiation experiment was repeated on sacrificed rabbits. This control procedure in the 2003 Marino study proved that living brain tissue absorption, not electrode interference, caused the observed brain wave changes.
Normal cell phone use patterns caused significant brain electrical activity changes in 90% of test animals. The 2003 study positioned 800 MHz phones near rabbit heads like human users and found measurable brain function alterations within milliseconds of exposure.