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

Microwaves emitted by cellular telephones affect human slow brain potentials.

Bioeffects Seen

Freude, G, Ullsperger, P, Eggert, S, Ruppe, I, · 2000

View Original Abstract
Share:

Cell phone radiation measurably alters brain wave patterns during complex mental tasks, suggesting selective interference with demanding cognitive processes.

Plain English Summary

Summary written for general audiences

German researchers studied how cell phone radiation affects brain waves by measuring electrical activity in the brain during different mental tasks. They found that exposure to cell phone EMF significantly altered slow brain potentials during complex visual monitoring tasks, though simpler tasks showed no effects. This suggests that cell phone radiation can selectively interfere with specific types of brain processing, particularly during demanding cognitive work.

Why This Matters

This study provides compelling evidence that cell phone radiation doesn't just pass harmlessly through our brains - it actively alters our neural activity in measurable ways. What makes this research particularly significant is that the effects were task-specific, appearing only during complex cognitive work that demands sustained attention and mental processing. This selective interference suggests that EMF exposure may be most problematic when our brains are working hardest, potentially affecting everything from work performance to driving safety. The fact that researchers replicated their findings six months later strengthens confidence in these results. While the study authors downplayed health implications, the reality is that any technology capable of altering brain wave patterns deserves serious consideration, especially given our increasing reliance on wireless devices during cognitively demanding activities.

Exposure Information

Specific exposure levels were not quantified in this study.

Study Details

The influence of electromagnetic fields (EMF) emitted by cellular telephones on preparatory slow brain potentials (SP) was studied in two experiments, about 6 months apart.

In the first experiment, a significant decrease of SP was found during exposure to EMF in a complex ...

In comparison to the VMT, no significant main EMF effects were found in BP and CNV tasks. The result...

Cite This Study
Freude, G, Ullsperger, P, Eggert, S, Ruppe, I, (2000). Microwaves emitted by cellular telephones affect human slow brain potentials. Eur J Appl Physiol 81(1-2):18-27, 2000.
Show BibTeX
@article{freude_2000_microwaves_emitted_by_cellular_2086,
  author = {Freude and G and Ullsperger and P and Eggert and S and Ruppe and I and},
  title = {Microwaves emitted by cellular telephones affect human slow brain potentials.},
  year = {2000},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/10552262/},
}
PubMed: 10552262

Cited By (89 papers)

View all 89 citing papers on Semantic Scholar

Quick Questions About This Study

German researchers found that cell phone radiation significantly altered slow brain potentials during complex visual monitoring tasks, but had no effect on simpler tasks. This suggests cell phone EMF can selectively interfere with demanding cognitive work that requires sustained visual attention.
Yes, a 2000 German study measured brain electrical activity and found that cell phone EMF exposure significantly changed slow brain potentials during complex mental tasks. However, the researchers noted this didn't affect actual performance, well-being, or health outcomes.
Research shows cell phone radiation has selective effects on brain processing. German scientists found EMF exposure altered brain waves during complex visual monitoring tasks but showed no effects during simpler brain potential tasks or basic cognitive activities.
Slow brain potentials are electrical brain wave patterns measured during mental tasks. German researchers discovered that cell phone radiation significantly altered these brain waves during demanding visual work, suggesting EMF can interfere with specific types of information processing.
A German study found that cell phone radiation can selectively interfere with complex visual monitoring tasks by altering brain wave patterns. However, the researchers emphasized this brain activity change didn't translate into measurable effects on performance or health.