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Exposure to ELF- magnetic field promotes restoration of sensori-motor functions in adult rats with hemisection of thoracic spinal cord.

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Das S, Kumar S, Jain S, Avelev VD, Mathur R. · 2012

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Low-intensity magnetic fields accelerated spinal cord injury recovery in rats, showing EMF effects depend critically on specific exposure parameters.

Plain English Summary

Summary written for general audiences

Researchers exposed rats with severe spinal cord injuries to extremely low-frequency magnetic fields (50 Hz at 17.96 μT) for 2 hours daily over 6 weeks. The magnetic field exposure significantly accelerated recovery of motor functions, bladder control, and pain responses compared to untreated injured rats. This suggests that specific EMF exposures might have therapeutic potential for spinal cord injury rehabilitation.

Why This Matters

This study represents a fascinating example of how specific EMF exposures can produce beneficial biological effects under controlled conditions. The magnetic field strength used (17.96 μT) is relatively low - comparable to what you might encounter near some household appliances or power lines, though the controlled timing and duration were key factors. What makes this research particularly significant is that it demonstrates measurable neurological recovery in a severe injury model where few effective treatments exist. The science demonstrates that EMF effects on biological systems are complex and highly dependent on frequency, intensity, and exposure patterns. While this doesn't mean everyday EMF exposure is beneficial - most research focuses on potential harms from chronic, uncontrolled exposure - it does illustrate why we need nuanced understanding rather than blanket assumptions about electromagnetic fields.

Exposure Details

Magnetic Field
0.01796 mG
Source/Device
50 Hz
Exposure Duration
2 h/d X 6 weeks

Exposure Context

This study used 0.01796 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: 0.01796 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the No Concern rangeFCC limit is 111,359x 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

In the present study, the effect of (50 Hz), low-intensity (17.96 μT) magnetic field (MF) exposure of rats after-hemisection of T13 spinal cord (hSCI) was investigated on sensori-motor and locomotor functions.

Rats were divided into hSCI (sham-exposed) and hSCI+MF (MF: 2 h/d X 6 weeks) groups. Besides their g...

It is found that, in the hSCI+MF group, a statistically significant improvement over the hSCI contro...

The results of our study suggest that extremely low-frequency (50 Hz), low-intensity (17.96 μT) MF exposure for 2 h/d x 6wks promotes recovery of sensori-motor behavior including locomotion and bladder control both in terms of temporal pattern and magnitude in hemisection injury of (T13) spinal cord rats.

Cite This Study
Das S, Kumar S, Jain S, Avelev VD, Mathur R. (2012). Exposure to ELF- magnetic field promotes restoration of sensori-motor functions in adult rats with hemisection of thoracic spinal cord. Electromagn Biol Med. 31(3):180-194, 2012.
Show BibTeX
@article{s_2012_exposure_to_elf_magnetic_626,
  author = {Das S and Kumar S and Jain S and Avelev VD and Mathur R.},
  title = {Exposure to ELF- magnetic field promotes restoration of sensori-motor functions in adult rats with hemisection of thoracic spinal cord.},
  year = {2012},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/22897399/},
}
PubMed: 22897399

Cited By (32 papers)

Quick Questions About This Study

Yes, research shows 50 Hz magnetic fields at 17.96 μT significantly accelerated recovery in rats with severe spinal cord injuries. Daily 2-hour exposures for 6 weeks improved motor function, bladder control, and pain responses compared to untreated injured rats, suggesting therapeutic potential.
In this study, rats with spinal cord injuries showed improvement within 1-2 weeks of magnetic field treatment. Complete bladder control returned by day 4 (versus day 7 in untreated rats), with continued motor improvements over the full 6-week treatment period.
Yes, extremely low-frequency magnetic field exposure dramatically improved bladder control recovery. Rats receiving 50 Hz magnetic field treatment regained complete bladder control by day 4, compared to day 7 in untreated spinal cord injured rats.
Research found that 17.96 μT magnetic fields at 50 Hz frequency promoted spinal cord injury recovery. This low-intensity magnetic field exposure for 2 hours daily significantly improved sensory-motor functions including locomotion and bladder control in injured rats.
Yes, 50 Hz electromagnetic fields (the same frequency as power lines) enhanced nerve function recovery in spinal cord injured rats. The magnetic field treatment improved motor scores, pain responses, and reflex functions compared to untreated injured animals.