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Involvement of NMDA receptor in low-frequency magnetic field-induced anxiety in mice.

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Salunke BP, Umathe SN, Chavan JG. · 2016

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Power-frequency magnetic fields caused anxiety in mice by disrupting brain chemistry, suggesting long-term EMF exposure may affect neurological function.

Plain English Summary

Summary written for general audiences

Researchers exposed mice to 50 Hz magnetic fields (the same frequency as power lines) for up to 120 days and found it caused significant anxiety-like behavior. The study identified that these fields disrupt brain chemistry by affecting NMDA receptors and increasing glutamate levels in key brain regions. This suggests that long-term exposure to power-frequency magnetic fields can alter brain function and behavior.

Why This Matters

This research provides compelling evidence that extremely low frequency magnetic fields - the type generated by power lines and household wiring - can fundamentally alter brain chemistry and behavior. The 10 Gauss exposure level used in this study is higher than typical household exposures (which range from 0.5 to 4 milligauss), but it's well within levels found near power lines or in some occupational settings. What makes this study particularly significant is its demonstration of a clear biological mechanism: EMF exposure disrupts the delicate balance of neurotransmitters in critical brain regions like the hippocampus, which governs memory and emotional regulation. The fact that anxiety increased progressively over 120 days of exposure suggests cumulative effects that mirror what many people report living near power infrastructure. While we can't directly extrapolate mouse studies to humans, this research adds to a growing body of evidence that EMF exposure affects neurological function through measurable biochemical pathways.

Exposure Details

Magnetic Field
1 mG
Source/Device
50 Hz
Exposure Duration
8h/day for 7, 30, 60, 90 and 120 days

Exposure Context

This study used 1 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 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 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

The present study was carried out to understand the contribution of NMDA and/or GABA receptors modulation in ELFMF-induced anxiety for which Swiss albino mice were exposed to ELFMF (50 Hz, 10 G) by subjecting them to Helmholtz coils.

The exposure was for 8 h/day for 7, 30, 60, 90 and 120 days. Anxiety level was assessed in elevated ...

Experiments demonstrated significant elevation of GABA and glutamate levels in the hippocampus and h...

Together, these findings suggest that ELFMF significantly induced anxiety behavior, and indicated the involvement of NMDA receptor in its effect.

Cite This Study
Salunke BP, Umathe SN, Chavan JG. (2016). Involvement of NMDA receptor in low-frequency magnetic field-induced anxiety in mice. Electromagn Biol Med. 2013 Oct 16.
Show BibTeX
@article{bp_2016_involvement_of_nmda_receptor_703,
  author = {Salunke BP and Umathe SN and Chavan JG.},
  title = {Involvement of NMDA receptor in low-frequency magnetic field-induced anxiety in mice.},
  year = {2016},
  doi = {10.3109/15368378.2013.839453},
  url = {https://www.tandfonline.com/doi/abs/10.3109/15368378.2013.839453},
}
DOI: 10.3109/15368378.2013.839453

Cited By (24 papers)

Quick Questions About This Study

Research shows 50 Hz magnetic fields from power lines can cause significant anxiety-like behavior after long-term exposure. A 2016 study found mice exposed to power-frequency magnetic fields for up to 120 days developed anxiety symptoms by disrupting brain chemistry and NMDA receptors.
Power-frequency magnetic fields disrupt NMDA receptors in the brain, leading to altered brain chemistry and anxiety behavior. The 2016 study by Salunke found that 50 Hz exposure affects these critical brain receptors, which play key roles in learning, memory, and neurological function.
Yes, 50 Hz magnetic field exposure significantly elevates glutamate levels in the hippocampus and hypothalamus brain regions. This 2016 research demonstrated that power-frequency EMF alters brain neurotransmitter balance, potentially contributing to anxiety and other neurological effects from chronic exposure.
Extended exposure to 50 Hz magnetic fields for 120 days causes measurable changes in brain behavior and chemistry. The study found this duration of power-frequency EMF exposure induced anxiety-like behaviors in mice while disrupting normal neurotransmitter function in key brain areas.
GABA receptor modulators showed no significant effect on anxiety caused by 50 Hz magnetic field exposure, despite elevated GABA levels in the brain. This suggests the anxiety mechanism involves NMDA receptors rather than GABA pathways, indicating more complex neurological disruption from power-frequency EMF.