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Brain & Nervous System

No effects of mobile phone use on cortical auditory change-detection in children: an ERP study

No Effects Found

Kwon MS, Huotilainen M, Shestakova A, Kujala T, Näätänen R, Hämäläinen H. · 2010

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Short cell phone exposure showed no effects on children's auditory brain function, but the study couldn't detect smaller impacts.

Plain English Summary

Summary written for general audiences

Researchers tested whether cell phone radiation affects children's ability to process sounds by measuring brain activity in 17 children aged 11-12 while they were exposed to 902 MHz signals from a GSM phone. The study found no significant changes in the brain's auditory processing or sound memory functions during short exposures (12 minutes total). However, the researchers noted their study could only detect large effects, meaning smaller impacts might have gone unnoticed.

Why This Matters

This study contributes to our understanding of EMF effects on developing brains, though its limitations are important to consider. The exposure levels used (SAR of 1.14 W/kg) are within current regulatory limits but represent significant radiation doses to children's developing neural tissue. What's particularly concerning is the researchers' acknowledgment that their study lacked statistical power to detect anything but large effects. The science demonstrates that children's brains absorb significantly more radiation than adults due to thinner skulls and developing tissue. While this study found no effects on auditory processing during brief exposures, it doesn't rule out subtler impacts or effects from longer-term use that characterizes real-world phone habits.

Exposure Details

SAR
1.14,0.82 and 1.21 W/kg
Source/Device
902 MHz

Exposure Context

This study used 1.14,0.82 and 1.21 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: 1.14,0.82 and 1.21 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern range (Building Biology)FCC limit is 2 times higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 902 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 902 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

We investigated the effect of mobile phone use on the auditory sensory memory in children.

Auditory event‐related potentials (ERPs), P1, N2, mismatch negativity (MMN), and P3a, were recorded ...

We found that a short exposure (two 6 min blocks for each side) to mobile phone EMF has no statistic...

However, it should be noted that the present study only had sufficient statistical power to detect a large effect size.

Cite This Study
Kwon MS, Huotilainen M, Shestakova A, Kujala T, Näätänen R, Hämäläinen H. (2010). No effects of mobile phone use on cortical auditory change-detection in children: an ERP study Bioelectromagnetics. 31(3):191-199, 2010b.
Show BibTeX
@article{ms_2010_no_effects_of_mobile_2778,
  author = {Kwon MS and Huotilainen M and Shestakova A and Kujala T and Näätänen R and Hämäläinen H. },
  title = {No effects of mobile phone use on cortical auditory change-detection in children: an ERP study},
  year = {2010},
  doi = {10.1002/bem.20546},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/bem.20546},
}
DOI: 10.1002/bem.20546

Cited By (30 papers)

Quick Questions About This Study

A 2010 study found no significant effects on children's auditory brain processing during short cell phone exposures. Researchers measured brain activity in 17 children aged 11-12 while exposed to 902 MHz signals and detected no changes in sound processing or memory functions.
Research on 11-12 year old children showed no statistically significant effects on brain activity during brief mobile phone exposure. However, the study could only detect large effects, meaning smaller impacts on neural function might have gone unnoticed.
A controlled study exposing children to GSM phone radiation (902 MHz) for 12 minutes total found no significant changes in brain activity related to sound processing. The researchers noted their methods could only identify large effects, not subtle changes.
Testing showed no impact on children's ability to detect sound changes during cell phone EMF exposure. Brain measurements revealed no alterations in auditory processing or sensory memory functions, though only large effects could be reliably detected in this study.
Short-term exposure studies found no measurable effects on children's brain activity during phone use. While this particular research detected no significant changes in auditory processing, the study design could only identify large-scale impacts, not subtle effects.