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Extremely low-frequency magnetic fields effects on the snail single neurons.

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Partsvania B, Sulaberidze T, Modebadze Z, Shoshiashvili L. · 2008

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EMF exposure disrupted basic learning processes in brain cells, suggesting electromagnetic fields may interfere with neural function.

Plain English Summary

Summary written for general audiences

Researchers exposed isolated snail brain cells to extremely low-frequency magnetic fields at the same frequencies used in cell phones (8.34 and 217 Hz) and measured how the neurons responded to electrical signals. They found that EMF exposure disrupted the normal learning process in these nerve cells, causing them to lose their ability to filter out repeated stimuli. This suggests that EMF exposure can interfere with basic neural functions that are fundamental to learning and memory.

Why This Matters

This study provides direct evidence that extremely low-frequency magnetic fields can disrupt fundamental neurological processes at the cellular level. The researchers used magnetic field strengths between 1 and 6 milliTesla, which are significantly higher than typical environmental exposures but within the range of some occupational settings and certain consumer devices. What makes this research particularly significant is that it demonstrates EMF effects on habituation, a basic form of learning where neurons normally reduce their response to repeated stimuli. The fact that EMF exposure caused 'dehabituation' suggests these fields can interfere with the brain's ability to process and filter information efficiently. While this study used snail neurons rather than human brain cells, the basic mechanisms of neural function are remarkably similar across species, making these findings relevant to understanding potential EMF effects on human cognition and learning.

Exposure Details

Magnetic Field
1 and 6 mG
Source/Device
8.34 and 217 Hz

Exposure Context

This study used 1 and 6 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 and 6 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Severe Concern rangeFCC limit is 2,000x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 217 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 217 HzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

The aim of present work is to explore the influence of extremely low-frequency electromagnetic fields (8.34 and 217 Hz) utilized in cell phones on habituation of the mollusk single neuron to intracellular stimuli.

The isolated nervous system of the mollusk Helix Pomatia was used in the experiments. Helmholtz coil...

Exposure of the neuron to the low-frequency electromagnetic fields caused dehabituation to intracell...

Cite This Study
Partsvania B, Sulaberidze T, Modebadze Z, Shoshiashvili L. (2008). Extremely low-frequency magnetic fields effects on the snail single neurons. Electromagn Biol Med. 27(4):409-417, 2008.
Show BibTeX
@article{b_2008_extremely_lowfrequency_magnetic_fields_282,
  author = {Partsvania B and Sulaberidze T and Modebadze Z and Shoshiashvili L.},
  title = {Extremely low-frequency magnetic fields effects on the snail single neurons.},
  year = {2008},
  
  url = {https://europepmc.org/article/med/19037790},
}

Cited By (7 papers)

Quick Questions About This Study

Yes, researchers found that 8.34 Hz magnetic fields disrupted normal learning processes in isolated snail brain cells. The exposure caused neurons to lose their ability to filter out repeated stimuli, suggesting EMF can interfere with basic neural functions fundamental to learning and memory.
A 2008 study showed that 217 Hz electromagnetic fields impaired the learning ability of snail neurons by causing dehabituation to repeated stimuli. The effect was proportional to magnetic field strength, indicating that even low-frequency EMFs can disrupt normal neural adaptation processes.
When snail brain cells were exposed to the same frequencies used in cell phones (8.34 and 217 Hz), they lost their normal ability to habituate to repeated electrical signals. This disruption occurred through degradation of signal-to-noise ratios in the neurons.
Research on snail neurons demonstrates that extremely low frequency magnetic fields degrade the signal-to-noise ratio in nerve cells and alter normal neuron function. The study found these effects were directly related to the strength of the magnetic field exposure.
Magnetic fields at cell phone frequencies (8.34 and 217 Hz) prevent brain neurons from properly habituating to repeated stimuli, a process essential for learning and memory. The 2008 snail neuron study showed this dehabituation effect increased with stronger magnetic field intensity.