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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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Five-minute exposure to weak magnetic fields caused permanent brain changes in most test subjects, suggesting lasting neurological effects.

Plain English Summary

Summary written for general audiences

Researchers exposed endangered beetles to a weak magnetic field (2 mT) for just 5 minutes and measured changes in their brain neuron activity. The magnetic field altered brain activity in all 8 beetles tested, with most effects being permanent rather than temporary. This demonstrates that even brief exposure to relatively weak magnetic fields can cause lasting changes to nervous system function.

Why This Matters

This study provides compelling evidence that magnetic fields can cause immediate and lasting changes to nervous system function, even at relatively low intensities and brief exposures. The 2 mT magnetic field used here is roughly 40 times stronger than Earth's natural magnetic field but well within the range of what you might encounter near household appliances or power lines. What makes this research particularly significant is that 7 out of 8 test subjects showed irreversible changes to their neuronal activity after just 5 minutes of exposure. While this was conducted on beetles rather than humans, the basic mechanisms of neuronal function are remarkably similar across species. The fact that such brief exposure to a relatively modest magnetic field could produce permanent neurological changes raises important questions about the cumulative effects of our daily EMF exposures from the countless magnetic field sources in our modern environment.

Exposure Information

Specific exposure levels were not quantified in this study. Duration: 5 min

Study Details

A method to detect the the effect of magnetic field on activity changes of neuronal populations of Morimus funereus (Coleoptera, Cerambycidae)

Modification of a new method for detecting changes in the activities of neuronal population and the ...

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_1571,
  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},
  doi = {10.1002/bem.20288},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/bem.20288},
}
DOI: 10.1002/bem.20288

Cited By (18 papers)

Quick Questions About This Study

Yes, a 2007 study found that exposing beetles to a weak 2 mT magnetic field for just 5 minutes caused permanent changes to brain neuron activity in 7 out of 8 beetles tested. The effects were largely irreversible, demonstrating lasting nervous system impacts from brief magnetic field exposure.
Research on Morimus funereus beetles shows magnetic field effects can occur within just 5 minutes of exposure. A 2 mT magnetic field altered brain activity in all 8 beetles tested, with most changes being permanent rather than temporary, indicating rapid nervous system responses.
Magnetic field exposure produces both effects in beetle brains. Research found that 2 mT magnetic fields caused excitatory responses in 5 out of 8 beetles and inhibitory responses in 3 out of 8, showing magnetic fields can alter nervous system activity in different directions.
Most magnetic field effects on insect brains appear permanent. A study exposing beetles to 2 mT magnetic fields found that 7 out of 8 showed irreversible changes in brain activity, with only 1 beetle recovering normal nervous system function after exposure ended.
Research on endangered Morimus funereus beetles found that magnetic fields as weak as 2 mT can alter brain function. This relatively low field strength caused permanent nervous system changes in most beetles after just 5 minutes of exposure, showing high sensitivity to magnetic fields.