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Cellular phone electromagnetic field effects on bioelectric activity of human brain.

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Lebedeva NN, Sulimov AV, Sulimova OP, Kotrovskaya TI, Gailus T. · 2000

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Cell phone radiation at typical exposure levels directly alters brain electrical activity, with effects persisting 30 minutes after exposure ends.

Plain English Summary

Summary written for general audiences

Russian researchers exposed 24 volunteers to cell phone radiation at 902.4 MHz for 15 minutes while measuring their brain activity using EEG. They found significant changes in brain electrical patterns during and after exposure, with the brain showing increased activation that persisted for 30 minutes after the phone was turned off. This demonstrates that cell phone radiation directly alters how the brain functions, even at relatively low power levels.

Why This Matters

This study provides compelling evidence that cell phone radiation doesn't just pass through our brains harmlessly-it actively changes how our brains work. The researchers used a power density of 0.06 mW/cm2, which is well within the range of typical cell phone emissions during calls. What makes this research particularly significant is that the brain changes persisted for the full 30-minute observation period after exposure ended, suggesting these aren't just temporary heating effects but actual alterations in neural activity. The science demonstrates that our brains are bioelectrical organs, and introducing artificial electromagnetic fields disrupts their normal functioning. You don't have to wait for long-term studies to take basic precautions-the evidence shows your brain responds immediately to cell phone radiation.

Exposure Details

Power Density
0.06 µW/m²
Source/Device
902.4 MHz
Exposure Duration
60 min

Exposure Context

This study used 0.06 µW/m² for radio frequency:

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.06 µW/m²Extreme Concern - 1,000 uW/m2FCC Limit - 10M uW/m2Effects observed in the No Concern rangeFCC limit is 166,666,667x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 902.4 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 902.4 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

The aim of this study is to investigate Cellular phone electromagnetic field effects on bioelectric activity of human brain.

24 volunteers participated in the experiments. The investigation of EEG reactions to cellular phone ...

As a result of EEG record processing, a significant increase of global correlation dimension during ...

Cite This Study
Lebedeva NN, Sulimov AV, Sulimova OP, Kotrovskaya TI, Gailus T. (2000). Cellular phone electromagnetic field effects on bioelectric activity of human brain. Crit Rev Biomed Eng 28(1-2):323-337, 2000.
Show BibTeX
@article{nn_2000_cellular_phone_electromagnetic_field_1143,
  author = {Lebedeva NN and Sulimov AV and Sulimova OP and Kotrovskaya TI and Gailus T.},
  title = {Cellular phone electromagnetic field effects on bioelectric activity of human brain.},
  year = {2000},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/10999398/},
}
PubMed: 10999398

Cited By (50 papers)

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Quick Questions About This Study

Yes, a 2000 study found that 902.4 MHz cell phone radiation significantly altered brain electrical patterns in 24 volunteers. The changes occurred during 15-minute exposure sessions and persisted for 30 minutes after the phone was turned off, indicating direct impacts on brain function.
Brain electrical changes from 902.4 MHz cell phone radiation persist for at least 30 minutes after exposure ends. Russian researchers found that increased brain activation patterns continued well beyond the 15-minute exposure period, demonstrating lasting effects on neural activity.
Brain waves show increased global correlation during 902.4 MHz cell phone exposure, indicating heightened cortex activation. The effect is more pronounced when eyes are closed, suggesting the brain responds differently to this specific frequency depending on visual input.
Yes, just 15 minutes of 902.4 MHz cell phone radiation significantly changes brain electrical activity patterns. The 2000 study demonstrated measurable cortex activation during this brief exposure period, with effects continuing after the phone was turned off.
Yes, 902.4 MHz radiation produces more pronounced brain changes when eyes are closed compared to eyes open. Researchers found stronger increases in global correlation dimension during the eyes-closed condition, suggesting visual state influences how the brain responds to this frequency.