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Investigation of EEG changes during exposure to extremely low-frequency magnetic field to conduct brain signals.

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Shafiei SA, Firoozabadi SM, Tabatabaie KR, Ghabaee M. · 2014

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ELF magnetic fields at household appliance levels measurably alter brain wave patterns, confirming the brain's electromagnetic sensitivity.

Plain English Summary

Summary written for general audiences

Researchers exposed different areas of the brain to extremely low-frequency magnetic fields (3-45 Hz) at various intensities and measured changes in brain wave patterns using EEG. They found significant alterations in brain electrical activity, particularly reductions in alpha waves in frontal and central brain regions. The findings suggest these magnetic fields can measurably alter brain function, which the researchers propose could be developed into therapeutic protocols.

Why This Matters

This study provides direct evidence that ELF magnetic fields can alter brain electrical activity at exposure levels well within the range of everyday sources. The magnetic field intensities tested (100-360 microTesla) are comparable to what you might experience near household appliances, power lines, or electrical wiring. What makes this research particularly significant is that it demonstrates measurable neurological effects across multiple frequency ranges, not just at specific resonant frequencies. The researchers' focus on therapeutic applications shouldn't obscure the broader implication: if these fields can be used to deliberately modify brain function, they're also capable of causing unintended neurological effects during routine exposure. The science demonstrates that our brains are electromagnetically sensitive organs, responding to field exposures that regulatory agencies have long dismissed as biologically irrelevant.

Exposure Details

Magnetic Field
0, 0.1, 0.24, 0.36 mG
Source/Device
3, 5, 10, 17, and 45 Hz

Exposure Context

This study used 0, 0.1, 0.24, 0.36 mG for magnetic fields:

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, 0.1, 0.24, 0.36 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the No Concern rangeFCC limit is 20,000x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 45 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 45 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

The aim of the present study was to investigate changes in EEG power spectrum due to localized exposure in different parts of the brain by extremely low-frequency magnetic fields (ELF-MFs) to extract some protocols for treatment of some psychological disorders.

In addition, regular effects were investigated by increasing intensity of ELF-MF. Therefore, EEG rel...

Significant changes were observed in different EEG bands caused by locally exposing to ELF-MF in dif...

Based on the findings in this study, some protocols can be designed using a combination of various MFs exposures to conduct the brain signals that is necessary to evaluate clinically.

Cite This Study
Shafiei SA, Firoozabadi SM, Tabatabaie KR, Ghabaee M. (2014). Investigation of EEG changes during exposure to extremely low-frequency magnetic field to conduct brain signals. Neurological Sciences volume 35, pages1715–1721(2014).
Show BibTeX
@article{sa_2014_investigation_of_eeg_changes_299,
  author = {Shafiei SA and Firoozabadi SM and Tabatabaie KR and Ghabaee M.},
  title = {Investigation of EEG changes during exposure to extremely low-frequency magnetic field to conduct brain signals.},
  year = {2014},
  doi = {10.1007/s10072-014-1819-0},
  url = {https://link.springer.com/article/10.1007/s10072-014-1819-0},
}
DOI: 10.1007/s10072-014-1819-0

Cited By (15 papers)

View all 15 citing papers on Semantic Scholar

Quick Questions About This Study

Yes, a 2014 study found that extremely low frequency magnetic fields (3-45 Hz) significantly altered brain wave patterns measured by EEG. The researchers observed notable changes in different frequency bands, particularly reductions in alpha waves in frontal and central brain regions during exposure.
Alpha brain waves decrease in frontal and central brain areas when exposed to extremely low frequency magnetic fields. The 2014 study by Shafiei and colleagues found these reductions occurred specifically during closed-eyes states, indicating measurable changes in brain electrical activity.
Yes, researchers found that extremely low frequency magnetic fields between 3-45 Hz produced different effects depending on which brain area was exposed. The study showed significant EEG changes varied by location, with frontal and central regions showing the most pronounced alpha wave reductions.
Researchers suggest yes, based on their findings that extremely low frequency magnetic fields can predictably alter brain signals. The 2014 study concluded that specific protocols using various magnetic field combinations could be designed to conduct brain signals for potential therapeutic applications.
Scientists use EEG (electroencephalography) to measure brain wave changes during magnetic field exposure. The 2014 study monitored different EEG frequency bands while exposing specific brain areas to extremely low frequency fields, detecting significant alterations in electrical brain activity patterns.