8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body

Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

Brain & Nervous System

Effect of amplitude-modulated radio frequency radiation on cholinergic system of developing rats.

No Effects Found

Kunjilwar KK, Behari J · 1993

View Original Abstract
Share:

Long-term RF radiation exposure significantly disrupted brain chemistry in developing rats, suggesting heightened vulnerability during critical growth periods.

Plain English Summary

Summary written for general audiences

Researchers exposed developing rats to radio frequency radiation at 147 MHz and lower frequencies for 3 hours daily over 30-35 days to study effects on the brain's cholinergic system, which is crucial for memory and learning. They found a significant decrease in acetylcholine esterase activity, an enzyme that helps regulate brain communication. This suggests that prolonged RF exposure during brain development may disrupt normal neurological function.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 76 Hz - 36.8 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 76 Hz - 36.8 MHzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

The study examined exposure from: 147, 73.5 and 36.75 MHz amplitude modulated at 16 and 76 Hz Duration: 30-35 days, 3 h per day

Study Details

The aim of this study is to investigate Effect of amplitude-modulated radio frequency radiation on cholinergic system of developing rats.

We examined the effect of long-term exposure to radio frequency radiation 147 MHz and its sub-harmon...

A significant decrease in acetylcholine esterase activity was found in exposed rats as compared to t...

A short-term exposure did not have any significant effect on AChE activity.

Cite This Study
Kunjilwar KK, Behari J (1993). Effect of amplitude-modulated radio frequency radiation on cholinergic system of developing rats. Brain Res 601(1-2):321-324, 1993.
Show BibTeX
@article{kk_1993_effect_of_amplitudemodulated_radio_3161,
  author = {Kunjilwar KK and Behari J},
  title = {Effect of amplitude-modulated radio frequency radiation on cholinergic system of developing rats.},
  year = {1993},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/8431780/},
}
PubMed: 8431780

Cited By (55 papers)

View all 55 citing papers on Semantic Scholar

Quick Questions About This Study

Research suggests prolonged RF exposure during brain development may disrupt normal neurological function. A 1993 study found that developing rats exposed to RF radiation for 30-35 days showed decreased brain enzyme activity, indicating potential impacts on memory and learning systems during critical development periods.
RF radiation may affect the brain's cholinergic system, which controls memory and learning. Studies in developing rats showed decreased acetylcholine esterase activity after prolonged exposure, suggesting potential disruption to brain communication pathways essential for cognitive function, though short-term exposure showed no significant effects.
Prolonged exposure to amplitude-modulated RF radiation may disrupt brain enzyme function. Research found significant decreases in acetylcholine esterase activity in developing rats after daily exposure, regardless of specific frequencies used. However, short-term exposure did not produce measurable effects on brain chemistry.
Radio wave exposure can alter brain enzyme activity, particularly affecting acetylcholine esterase, which regulates neurotransmitter function. Studies show that prolonged daily exposure during development significantly decreased this enzyme's activity, potentially disrupting normal brain communication, while brief exposures produced no detectable changes.
RF radiation may pose neurological risks during brain development, particularly affecting memory and learning systems. Research demonstrates that prolonged exposure can significantly reduce key brain enzyme activity, suggesting potential disruption to normal neurological development, though the effects appear dependent on exposure duration rather than frequency.