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A method for detecting the effect of magnetic field on activity changes of neuronal populations of Morimus funereus (Coleoptera, Cerambycidae).

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Todorović D, Kalauzi A, Prolić Z, Jović M, Mutavdzić D. · 2007

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Brief magnetic field exposure caused permanent nerve changes in 87% of test subjects at levels comparable to household appliances.

Plain English Summary

Summary written for general audiences

Researchers exposed endangered longhorn beetles to weak magnetic fields (2 milliTesla) for five minutes and monitored their brain nerve activity. The magnetic field caused permanent changes to nerve cell activity in 7 out of 8 beetles tested, with some neurons becoming more active and others less active. This demonstrates that even brief exposure to relatively weak magnetic fields can cause lasting changes to nervous system function in living organisms.

Why This Matters

This study provides compelling evidence that magnetic fields can cause permanent neurological changes at surprisingly low exposure levels. The 2 milliTesla field used here is roughly equivalent to what you might encounter from some household appliances or power lines, yet it produced irreversible effects in 87% of the test subjects after just five minutes of exposure. What makes this research particularly significant is that it demonstrates biological effects aren't always temporary - the nervous system changes persisted even after the magnetic field was removed. While this study used insects rather than humans, the fundamental mechanisms of nerve cell function are remarkably similar across species. The reality is that our understanding of how magnetic fields affect nervous system activity is still developing, but studies like this suggest we may be underestimating the potential for lasting biological impacts from everyday EMF exposures.

Exposure Details

Magnetic Field
2 mG

Exposure Context

This study used 2 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: 2 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Severe Concern rangeFCC limit is 1,000x higher than this level

Study Details

Modification of a new method for detecting changes in the activities of neuronal population and the nearest neuron is described.

Preliminary measurements of the influence of a static magnetic field (2 mT) on neuronal population a...

Five minutes exposure produced both excitatory (5/8) and inhibitory (3/8) effect on the activity of ...

Cite This Study
Todorović D, Kalauzi A, Prolić Z, Jović M, Mutavdzić D. (2007). A method for detecting the effect of magnetic field on activity changes of neuronal populations of Morimus funereus (Coleoptera, Cerambycidae). Bioelectromagnetics. 28(3):238-241, 2007.
Show BibTeX
@article{d_2007_a_method_for_detecting_722,
  author = {Todorović D and Kalauzi A and Prolić Z and Jović M and Mutavdzić D.},
  title = {A method for detecting the effect of magnetic field on activity changes of neuronal populations of Morimus funereus (Coleoptera, Cerambycidae).},
  year = {2007},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/17203477/},
}
PubMed: 17203477

Cited By (18 papers)

Quick Questions About This Study

Yes, research shows magnetic fields can cause lasting brain changes. A 2007 study found that just five minutes of weak magnetic field exposure caused permanent alterations to nerve cell activity in 7 out of 8 beetles tested, demonstrating irreversible nervous system effects.
Studies indicate weak magnetic fields can alter nervous system function. Research on beetles exposed to 2 milliTesla magnetic fields for five minutes showed permanent changes to brain nerve activity, with some neurons becoming more active while others became less active.
Magnetic field effects on nerves can occur within minutes. A controlled study found that just five minutes of magnetic field exposure caused lasting changes to nerve cell activity in nearly 90% of test subjects, suggesting rapid biological impact.
Brief magnetic field exposures can impact brain cells. Research demonstrated that five-minute exposures to weak magnetic fields caused permanent changes to nerve cell activity patterns, affecting both the excitation and inhibition of neurons in living organisms.
Neurons can experience permanent activity changes during magnetic field exposure. Studies show that weak magnetic fields alter nerve cell behavior, making some neurons more active while reducing activity in others, with most changes proving irreversible even after exposure ends.