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Brain & Nervous System

Effects of extremely low frequency electromagnetic fields (100μT) on behaviors in rats.

No Effects Found

Lai J, Zhang Y, Liu X, Zhang J, Ruan G, Chaugai S, Chen C, Wang DW. · 2015

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24-week exposure to 100 microtesla magnetic fields caused no behavioral or brain changes in rats, suggesting these ELF levels may not impair mental function.

Plain English Summary

Summary written for general audiences

Researchers exposed adult male rats to 50 Hz magnetic fields at 100 microtesla for 24 weeks and tested their behavior, memory, and brain structure. The study found no effects on anxiety, depression, learning ability, or brain tissue compared to unexposed rats. This suggests that prolonged exposure to this level of extremely low frequency magnetic fields may not cause behavioral or cognitive problems.

Exposure Information

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

The study examined exposure from: 50 Hz Duration: 24 weeks exposure

Study Details

we explored the effects of ELF-EMF on behaviors of adult male rats.

Sixty adult male rats were randomly divided into two groups, the sham exposure group and the 50 Hz/1...

Results showed that food and water intake and the body weight of the rats were not affected by the e...

In conclusion, 24 weeks exposure to 50 Hz/100 μT ELF-EMF had no effect on the behaviors of the adult male rats.

Cite This Study
Lai J, Zhang Y, Liu X, Zhang J, Ruan G, Chaugai S, Chen C, Wang DW. (2015). Effects of extremely low frequency electromagnetic fields (100μT) on behaviors in rats. Neurotoxicology. 2015 Nov 21. pii: S0161-813X(15)30026-7. doi: 10.1016/j.neuro.2015.11.010.
Show BibTeX
@article{j_2015_effects_of_extremely_low_2898,
  author = {Lai J and Zhang Y and Liu X and Zhang J and Ruan G and Chaugai S and Chen C and Wang DW.},
  title = {Effects of extremely low frequency electromagnetic fields (100μT) on behaviors in rats.},
  year = {2015},
  
  url = {https://www.sciencedirect.com/science/article/abs/pii/S0161813X15300267},
}

Quick Questions About This Study

No, 24 weeks of exposure to 50 Hz magnetic fields at 100 microtesla caused no behavioral changes in adult male rats. The 2015 study found no effects on anxiety, depression, learning, memory, or brain tissue structure compared to unexposed rats.
Research shows 100 microtesla 50 Hz magnetic field exposure for 24 weeks does not impair memory or learning ability in rats. Morris water maze and fear conditioning tests revealed no cognitive differences between exposed and unexposed animals.
A 2015 study found that 24 weeks of 50 Hz magnetic field exposure at 100 microtesla did not damage brain tissue in rats. Brain morphology and histology remained normal, suggesting this exposure level may not harm brain structure.
No, chronic 50 Hz magnetic field exposure at 100 microtesla for 24 weeks did not cause anxiety or depression-like behaviors in rats. Open field tests and elevated plus maze results showed no differences from unexposed control animals.
No, 24 weeks of 50 Hz magnetic field exposure at 100 microtesla did not affect body weight, food intake, or water consumption in adult male rats. Physical health parameters remained normal throughout the study period.