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Neurophysiological and behavioral effects of a 60 Hz, 1,800 μT magnetic field in humans

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Legros A, Corbacio M, Beuter A, Modolo J, Goulet D, Prato FS, Thomas AW. · 2012

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One hour of power line frequency magnetic field exposure measurably impaired balance and increased tremors in healthy adults.

Plain English Summary

Summary written for general audiences

Researchers exposed people to 60 Hz magnetic fields (like those from power lines) for one hour. The exposure reduced standing balance and increased hand tremors, suggesting these common electrical frequencies can affect nervous system control of movement without obvious brain changes.

Why This Matters

This study provides compelling evidence that even short-term exposure to power frequency magnetic fields can measurably affect human neuromotor function. The 1,800 microTesla exposure level, while higher than typical household environments (which range from 0.1 to 4 microTesla), is well within levels found near power lines, electrical panels, or certain appliances. What makes this research particularly significant is that it demonstrates biological effects on the nervous system without detectable changes in brain wave activity, suggesting that standard EEG monitoring may miss important neurological impacts of EMF exposure. The fact that balance and fine motor control were affected after just one hour of exposure raises important questions about the cumulative effects of chronic exposure in our electrically dense modern environment.

Exposure Details

Magnetic Field
1.8 mG
Source/Device
60 Hz
Exposure Duration
1h

Exposure Context

This study used 1.8 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: 1.8 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Severe Concern rangeFCC limit is 1,111x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 60 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

the present study aimed to investigate the effects of a 60 Hz, 1,800 μT MF exposure on neurophysiological (EEG) and neuromotor (standing balance, voluntary motor function, and physiological tremor) aspects in humans using a single experimental procedure.

Though results from this study suggest a reduction of human standing balance with MF exposure, as we...

These results suggest that 1 h of 60 Hz, 1,800 μT MF exposure may modulate human involuntary motor control without being detected in the cortical electrical activity.

Cite This Study
Legros A, Corbacio M, Beuter A, Modolo J, Goulet D, Prato FS, Thomas AW. (2012). Neurophysiological and behavioral effects of a 60 Hz, 1,800 μT magnetic field in humans Eur J Appl Physiol. 112(5):1751-1762, 2012.
Show BibTeX
@article{a_2012_neurophysiological_and_behavioral_effects_272,
  author = {Legros A and Corbacio M and Beuter A and Modolo J and Goulet D and Prato FS and Thomas AW. },
  title = {Neurophysiological and behavioral effects of a 60 Hz, 1,800 μT magnetic field in humans},
  year = {2012},
  doi = {10.1007/s00421-011-2130-x},
  url = {https://link.springer.com/article/10.1007/s00421-011-2130-x},
}
DOI: 10.1007/s00421-011-2130-x

Cited By (26 papers)

Quick Questions About This Study

Research shows that 60 Hz magnetic fields from power lines can reduce standing balance after one hour of exposure. A 2012 study found people exposed to these common electrical frequencies had measurable balance problems and increased hand tremors, suggesting power line fields affect nervous system motor control.
Yes, 60 Hz electrical frequencies can increase hand tremors. Scientists exposed people to magnetic fields similar to those from household electricity and power lines, finding increased physiological tremor amplitude after one hour. The tremors occurred in frequency ranges linked to central nervous system function.
60 Hz magnetic field exposure can affect motor control without obvious brain changes. Research demonstrates that one hour of exposure reduces balance and increases tremors, though it doesn't alter brain wave patterns or voluntary movement. The long-term health implications remain under investigation.
Power line magnetic fields affect nervous system motor control but don't show up in brain wave measurements. While 60 Hz exposure reduces balance and increases tremors, researchers found no changes in EEG patterns or voluntary movement, suggesting effects occur below conscious detection levels.
60 Hz exposure affects involuntary motor control, causing reduced standing balance and increased hand tremors after one hour. However, the same exposure doesn't impact brain electrical activity or voluntary movements, indicating selective effects on specific nervous system functions rather than widespread neurological changes.