Effect of chronic intermittent exposure to AM radiofrequency field on responses to various types of noxious stimuli in growing rats.
Mathur R. · 2008
View Original AbstractChronic RF exposure altered pain processing in developing rats at levels below current safety limits, suggesting neurological vulnerability during growth.
Plain English Summary
Researchers exposed growing rats to amplitude-modulated radiofrequency radiation (similar to AM radio signals) for 2 hours daily over 45 days and tested their pain responses. The exposed rats showed altered pain processing - they became more emotionally reactive to sharp pain while experiencing less sensitivity to prolonged pain. This suggests that RF radiation can disrupt the nervous system's normal pain processing mechanisms during critical developmental periods.
Why This Matters
This study reveals something particularly concerning about RF radiation exposure during development. The researchers found that chronic exposure to amplitude-modulated RF fields at relatively low power levels (SAR of 0.4 W/kg, which is below current safety limits) fundamentally altered how the developing nervous system processes pain signals. What makes this especially relevant is that the exposure parameters closely mirror real-world AM radio transmissions that many people encounter daily. The fact that pain processing was disrupted suggests broader neurological effects that could extend beyond pain sensation itself. The science demonstrates that the developing nervous system appears particularly vulnerable to RF radiation, with effects persisting even after exposure ends. This adds to the growing body of evidence showing that current safety standards may not adequately protect developing organisms from neurological impacts of chronic RF exposure.
Exposure Details
- SAR
- 0.4 W/kg
- Power Density
- 1.33 µW/m²
- Source/Device
- 73.5 MHz amplitude modulated
- Exposure Duration
- 45 d (2 h/d)
Exposure Context
This study used 1.33 µW/m² for radio frequency:
- 133Mx above the Building Biology guideline of 0.1 μW/m²
- 2.2Mx above the BioInitiative Report recommendation of 0.0006 μW/cm²
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 Details
To study the effect of Chronic Intermittent Exposure to AM Radiofrequency Field on Responses to Various Types of Noxious Stimuli in Growing Rats
We studied the pattern of nociceptive responses to various noxious stimuli in growing rats exposed t...
The TFL was not affected, HPL was decreased (p < 0.01), and the thresholds of TF and VD were not aff...
The data suggest that amplitude modulated RF field differentially affects the mechanisms involved in the processing of various noxious stimuli.
Show BibTeX
@article{r._2008_effect_of_chronic_intermittent_142,
author = {Mathur R.},
title = {Effect of chronic intermittent exposure to AM radiofrequency field on responses to various types of noxious stimuli in growing rats.},
year = {2008},
url = {https://pubmed.ncbi.nlm.nih.gov/18821202/},
}