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The developmental effects of extremely low frequency electric fields on visual and somatosensory evoked potentials in adult rats

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Gok DK, Akpinar D, Hidisoglu E, Ozen S, Agar A, Yargicoglu P. · 2016

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Electric field exposure during development caused lasting brain function impairments in rats through oxidative damage mechanisms.

Plain English Summary

Summary written for general audiences

Researchers exposed pregnant rats and their offspring to 50 Hz electric fields (the same frequency as household electricity) and measured brain wave responses to visual and touch stimuli. The exposed animals showed delayed brain responses and increased oxidative damage in both brain and retinal tissue compared to unexposed controls. This suggests that electric field exposure during development can impair nervous system function through cellular damage mechanisms.

Why This Matters

This research demonstrates that extremely low frequency electric fields can disrupt normal brain development and function, with effects persisting into adulthood. The 12 kV/m exposure level used here is significantly higher than typical household exposures (which range from 1-100 V/m), but it's within the range found near high-voltage power lines. What makes this study particularly concerning is that it shows both prenatal and postnatal exposure windows can cause lasting neurological changes, with the combination of both exposures producing the most severe effects. The researchers linked these functional impairments to oxidative stress, providing a biological mechanism for how electric fields might damage developing nervous systems. While we can't directly extrapolate from rats to humans, this adds to growing evidence that EMF exposure during critical developmental periods may have lasting consequences for brain function.

Exposure Details

Electric Field
12000 V/m
Source/Device
50 Hz
Exposure Duration
1 h/day

Exposure Context

This study used 12000 V/m for electric 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.

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 purpose of our study was to investigate the developmental effects of extremely low frequency electric fields (ELF-EFs) on visual evoked potentials (VEPs) and somatosensory-evoked potentials (SEPs) and to examine the relationship between lipid peroxidation and changes of these potentials.

In this context, thiobarbituric acid reactive substances (TBARS) levels were determined as an indica...

The latencies of VEP components in all experimental groups were significantly prolonged versus C gro...

In conclusion, alterations seen in evoked potentials, at least partly, could be explained by lipid peroxidation in the retina and brain.

Cite This Study
Gok DK, Akpinar D, Hidisoglu E, Ozen S, Agar A, Yargicoglu P. (2016). The developmental effects of extremely low frequency electric fields on visual and somatosensory evoked potentials in adult rats Electromagn Biol Med. 35(3):245-259, 2016.
Show BibTeX
@article{dk_2016_the_developmental_effects_of_378,
  author = {Gok DK and Akpinar D and Hidisoglu E and Ozen S and Agar A and Yargicoglu P.},
  title = {The developmental effects of extremely low frequency electric fields on visual and somatosensory evoked potentials in adult rats},
  year = {2016},
  doi = {10.3109/15368378.2014.987923},
  url = {https://www.tandfonline.com/doi/abs/10.3109/15368378.2014.987923?journalCode=iebm20},
}

Cited By (5 papers)

Quick Questions About This Study

Yes, a 2016 study found that 50 Hz electric field exposure during pregnancy and early development significantly delayed brain wave responses to visual and touch stimuli in rats. The exposed animals showed prolonged response times compared to unexposed controls, indicating impaired nervous system function.
Research shows that exposure to 50 Hz electric fields (household electricity frequency) during development prolonged visual evoked potential responses in all exposed rat groups. This suggests that common electrical field exposure can impair how the developing brain processes visual information.
Yes, 50 Hz electric field exposure significantly increased oxidative damage markers (TBARS levels) in retinal tissue across all experimental groups. This cellular damage in the retina may explain the delayed visual processing responses observed in the exposed animals.
Exposure to 50 Hz electric fields during development delayed somatosensory evoked potentials, which measure brain responses to touch stimuli. Different exposure timing affected various components of touch processing, with some groups showing delays in multiple response phases.
Yes, rats exposed to 50 Hz electric fields during prenatal and postnatal periods showed significantly increased brain TBARS levels, indicating lipid peroxidation damage. Researchers concluded this oxidative damage partially explains the observed delays in brain response timing.