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Whole body exposure with GSM 900MHz affects spatial memory in mice.

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Fragopoulou AF, Miltiadous P, Stamatakis A, Stylianopoulou F, Koussoulakos SL, Margaritis LH. · 2010

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Cell phone radiation at typical use levels impaired spatial memory in mice after just 4 days of exposure.

Plain English Summary

Summary written for general audiences

Researchers exposed mice to 900MHz cell phone radiation for 2 hours daily over 4 days, then tested their spatial memory using maze tasks. Exposed mice showed significant learning and memory deficits compared to unexposed mice, suggesting mobile phone radiation may impair brain function.

Why This Matters

This study provides compelling evidence that mobile phone radiation can impair cognitive function at exposure levels well within the range of everyday cell phone use. The SAR levels tested (0.41-0.98 W/kg) are comparable to what your head absorbs during a typical phone call, yet produced measurable deficits in spatial memory after just 8 total hours of exposure. What makes this research particularly significant is that it specifically addressed a gap in the literature, as previous mouse studies used much lower exposure levels that showed no effects. The science demonstrates that there's a threshold above which cognitive impacts become apparent. The reality is that millions of people regularly expose themselves to similar or higher SAR levels through normal phone use, yet regulatory agencies continue to focus primarily on heating effects while largely ignoring these non-thermal cognitive impacts. This study adds to a growing body of evidence suggesting our current safety standards may be inadequate to protect brain function.

Exposure Details

SAR
0.41 - 0.98 W/kg
Source/Device
900MHz
Exposure Duration
2 hours for 4 day

Exposure Context

This study used 0.41 - 0.98 W/kg for SAR (device absorption):

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: 0.41 - 0.98 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern rangeFCC limit is 4x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 900 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 900 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

The present work has been designed in order to test the effects of mobile phone radiation on spatial learning and memory in mice Mus musculus Balb/c using the Morris water maze (a hippocampal-dependent spatial memory task), since there is just one other study on mice with very low SAR level (0.05W/kg) showing no effects.

We have applied a 2h daily dose of pulsed GSM 900MHz radiation from commercially available mobile ph...

Statistical analysis revealed that during learning, exposed animals showed a deficit in transferring...

Our results provide a basis for more thorough investigations considering reports on non-thermal effects of electromagnetic fields (EMFs).

Cite This Study
Fragopoulou AF, Miltiadous P, Stamatakis A, Stylianopoulou F, Koussoulakos SL, Margaritis LH. (2010). Whole body exposure with GSM 900MHz affects spatial memory in mice. Pathophysiology. 17(3):179-187,2010.
Show BibTeX
@article{af_2010_whole_body_exposure_with_977,
  author = {Fragopoulou AF and Miltiadous P and Stamatakis A and Stylianopoulou F and Koussoulakos SL and Margaritis LH.},
  title = {Whole body exposure with GSM 900MHz affects spatial memory in mice.},
  year = {2010},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/19954937/},
}
PubMed: 19954937

Cited By (87 papers)

View all 87 citing papers on Semantic Scholar

Quick Questions About This Study

Yes, mice exposed to 900MHz cell phone radiation for 2 hours daily over 4 days showed significant spatial memory deficits. Exposed mice had trouble learning maze tasks and couldn't remember spatial information compared to unexposed mice, suggesting mobile phone radiation impairs brain function.
Research shows 4 days of 900MHz cell phone radiation exposure caused learning deficits in mice. Exposed animals took longer to navigate mazes and swam greater distances to find targets, indicating the radiation interfered with their ability to acquire spatial information.
A 2010 study found that 900MHz GSM radiation disrupted memory consolidation in mice. While unexposed mice showed normal preference for target locations in memory tests, radiation-exposed mice showed no preference, indicating they couldn't properly store or retrieve learned spatial information.
Mice exposed to daily phone radiation showed impaired maze performance, including increased escape times and longer swimming distances. The radiation-exposed animals couldn't transfer learned spatial information between training days, demonstrating significant deficits in spatial learning and memory tasks.
Yes, just 2 hours daily of 900MHz exposure for 4 days caused measurable brain effects in mice without heating tissue. The study demonstrated non-thermal electromagnetic field effects on spatial memory, providing evidence for biological impacts below thermal thresholds.