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Electromagnetic field exposure (50 Hz) impairs response to noxious heat in American cockroach.

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Maliszewska J, Marciniak P, Kletkiewicz H, Wyszkowska J, Nowakowska A, Rogalska J. · 2018

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Exposure to a 50 Hz magnetic field significantly increased the time American cockroaches took to escape from noxious heat and raised markers of oxidative stress.

Plain English Summary

Summary written for general audiences

Researchers studied whether a 50 Hz magnetic field affects how American cockroaches respond to noxious heat and alters oxidative stress markers. The exposure was 50 Hz at 7 mT, and the researchers measured how long cockroaches took to escape from high ambient temperature. Escape latency significantly increased after 24 hours, 72 hours, and 7 days of EMF exposure. Malondialdehyde levels increased significantly after 24-hour exposure and remained elevated up to 7 days, while glutathione levels significantly declined after 7 days of exposure.

Why This Matters

The study measured escape latency from noxious heat as a way to assess heat perception in the cockroaches. Malondialdehyde and glutathione were used as markers of oxidative balance. The researchers concluded that EMF exposure acted as a considerable stress factor affecting both oxidative state and heat perception.

Exposure Details

Magnetic Field
7 mT
Source/Device
50 Hz
Exposure Duration
24, 72 h and 7 days

Exposure Context

This study used 7 mT 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: 7 mTExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Extreme Concern range (Building Biology)This level is 35 times the FCC limit
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

To examine whether exposure of cockroaches to a 50 Hz magnetic field influences the escape latency from noxious heat and alters oxidative stress related parameters.

In this study, we evaluated the effect of EMF exposure (50 Hz, 7 mT) on cockroach's response to noxi...

Our results showed that exposure to EMF for 24, 72 h and 7 days significantly increases the latency ...

These results demonstrate that EMF exposure is a considerable stress factor that affects oxidative state and heat perception in American cockroach.

Cite This Study
Maliszewska J, Marciniak P, Kletkiewicz H, Wyszkowska J, Nowakowska A, Rogalska J. (2018). Electromagnetic field exposure (50 Hz) impairs response to noxious heat in American cockroach. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2018; 204 (6): 605-611.
Show BibTeX
@article{j_2018_electromagnetic_field_exposure_50_417,
  author = {Maliszewska J and Marciniak P and Kletkiewicz H and Wyszkowska J and Nowakowska A and Rogalska J.},
  title = {Electromagnetic field exposure (50 Hz) impairs response to noxious heat in American cockroach.},
  year = {2018},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/29721708/},
}
PubMed: 29721708

Cited By (14 papers)

Quick Questions About This Study

The study used a 50 Hz magnetic field at 7 mT.
Exposure significantly increased the latency to escape from noxious heat at 24 hours, 72 hours, and 7 days.
Malondialdehyde levels increased significantly after 24-hour exposure and remained elevated up to 7 days, and glutathione levels significantly declined after 7 days.
The researchers concluded that EMF exposure is a considerable stress factor that affects oxidative state and heat perception in the American cockroach.