Electromagnetic fields, such as those from mobile phones, alter regional cerebral blood flow and sleep and waking EEG.
HuberR, TreyerV, BorbélyAA, SchudererJ, GottseligJM, LandoltH-P, WerthE, BertholdT, KusterN, BuckA, AchermannP · 2002
View Original AbstractCell phone radiation measurably alters brain blood flow and electrical activity, proving EMF exposure creates real biological changes.
Plain English Summary
Swiss researchers exposed people to 30 minutes of cell phone radiation (900 MHz) and then measured brain blood flow and sleep patterns. They found that pulse-modulated EMF exposure increased blood flow to the prefrontal cortex and altered brainwave patterns during both wake and sleep states. This demonstrates that cell phone radiation can directly influence brain physiology in measurable ways.
Why This Matters
This study provides compelling evidence that EMF exposure from mobile phones creates measurable changes in brain function. What makes this research particularly significant is that it used rigorous imaging techniques (PET scans) to show actual physiological changes in blood flow to specific brain regions. The fact that only pulse-modulated EMF created these effects suggests that the specific characteristics of cell phone signals matter, not just the presence of radiofrequency energy. The reality is that your brain responds to cell phone radiation in ways that can be detected and measured. While the researchers suggest these effects might have therapeutic applications, the broader implication is clear: EMF exposure is not biologically inert as industry often claims. This adds to the growing body of evidence that our brains are sensitive to the electromagnetic fields we encounter daily from our devices.
Exposure Information
Specific exposure levels were not quantified in this study. The study examined exposure from: 900 MHz Duration: 30-min
Study Details
We investigated the effect of EMF vs. sham control exposure on waking regional cerebral blood flow (rCBF) and on waking and sleep electroencephalogram (EEG) in humans.
In Experiment 1, positron emission tomography (PET) scans were taken after unilateral head exposure ...
Pulse-modulated EMF exposure increased relative rCBF in the dorsolateral prefrontal cortex ipsilater...
The present results show for the first time that (1) pm-EMF alters waking rCBF and (2) pulse modulation of EMF is necessary to induce waking and sleep EEG changes. Pulse-modulated EMF exposure may provide a new, non-invasive method for modifying brain function for experimental, diagnostic and therapeutic purposes.
Show BibTeX
@article{huberr_2002_electromagnetic_fields_such_as_2211,
author = {HuberR and TreyerV and BorbélyAA and SchudererJ and GottseligJM and LandoltH-P and WerthE and BertholdT and KusterN and BuckA and AchermannP},
title = {Electromagnetic fields, such as those from mobile phones, alter regional cerebral blood flow and sleep and waking EEG.},
year = {2002},
url = {https://pubmed.ncbi.nlm.nih.gov/12464096/},
}