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Brain & Nervous System

Pentylenetetrazol-induced seizures are not altered by pre- or post-drug exposure to a 50 Hz magnetic field

No Effects Found

Canseven AG, Keskil ZA, Keskil S, Seyhan N. · 2007

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This study shows that 50 Hz magnetic fields at 0.2 mT don't affect seizure activity in mice, ruling out therapeutic potential.

Plain English Summary

Summary written for general audiences

Researchers exposed mice to 50 Hz magnetic fields (the same frequency as power lines) before and after inducing seizures with a chemical drug, to see if the magnetic field exposure would affect seizure activity. They found no changes in seizure timing, duration, or death rates, suggesting that this type of magnetic field exposure doesn't influence seizure disorders. This challenges any potential therapeutic use of magnetic fields for epilepsy treatment.

Why This Matters

While this study found no effect of 50 Hz magnetic field exposure on seizures, it's worth noting the exposure level used: 0.2 milliTesla (mT). To put this in perspective, this is roughly 100 times stronger than typical household magnetic field exposures from power lines or appliances, which usually range from 0.01 to 0.2 mT at very close distances. The researchers were specifically investigating whether magnetic fields might have therapeutic potential for epilepsy, not examining potential harm. The negative result here doesn't address the broader question of whether chronic, lower-level EMF exposure might affect neurological function in other ways. What this study does demonstrate is that acute exposure to relatively strong 50 Hz magnetic fields doesn't appear to modulate seizure activity in this animal model, which provides useful data for understanding how power-frequency fields interact with brain electrical activity.

Exposure Details

Magnetic Field
0.2 mT
Source/Device
50 Hz

Exposure Context

This study used 0.2 mT 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: 0.2 mTExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Extreme Concern range (Building Biology)This level is 1 times the FCC limit
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

To investigate whether pre- and post-drug magnetic field (MF) exposure of 50 Hz, 0.2 mT has any significant effect on pentylenetetrazol (PTZ)-induced seizures in mice.

MF was generated by a pair of Helmholtz coils. Seizures were induced by PTZ injection intraperitonea...

Neither pre- nor post-drug exposure to a 50 Hz, 0.2 mT MF was found to have any effect on PTZ-induce...

The present study failed to provide any support for a therapeutic potential of a 50 Hz, 0.2 mT MF for epilepsy.

Cite This Study
Canseven AG, Keskil ZA, Keskil S, Seyhan N. (2007). Pentylenetetrazol-induced seizures are not altered by pre- or post-drug exposure to a 50 Hz magnetic field Radiat Biol. 83(4):231-235, 2007.
Show BibTeX
@article{ag_2007_pentylenetetrazolinduced_seizures_are_not_2824,
  author = {Canseven AG and Keskil ZA and Keskil S and Seyhan N.},
  title = {Pentylenetetrazol-induced seizures are not altered by pre- or post-drug exposure to a 50 Hz magnetic field},
  year = {2007},
  doi = {10.1080/09553000701206676},
  url = {https://www.tandfonline.com/doi/abs/10.1080/09553000701206676},
}
DOI: 10.1080/09553000701206676

Cited By (5 papers)

Quick Questions About This Study

Research using 50 Hz magnetic fields (the same frequency as power lines) found no effect on seizure activity in laboratory studies. A 2007 study exposed mice to these magnetic fields before and after chemically-induced seizures, finding no changes in seizure timing, duration, or outcomes.
A controlled study found that 50 Hz magnetic fields provided no therapeutic benefit for epilepsy treatment. Researchers tested whether magnetic field exposure could reduce seizure activity in mice, but found no improvements in seizure control or survival rates.
Research suggests 50 Hz magnetic fields don't worsen epilepsy symptoms. A 2007 laboratory study found that exposure to these fields (common from power lines and electrical systems) had no effect on seizure frequency, duration, or severity in test subjects.
Studies show power line magnetic fields don't influence seizure activity. Research using 50 Hz magnetic fields found no changes in seizure patterns when exposure occurred before or after seizure induction, suggesting these everyday electromagnetic exposures don't affect epileptic conditions.
Current research indicates electromagnetic fields at power line frequencies don't increase seizure risk. A controlled study found that 50 Hz magnetic field exposure had no effect on seizure occurrence or severity, suggesting these common environmental exposures don't trigger epileptic episodes.