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Brain & Nervous System

Effects of thirty minutes mobile phone use on the human sensory cortex.

No Effects Found

Yuasa K, Arai N, Okabe S, Tarusawa Y, Nojima T, Hanajima R, Terao Y, Ugawa Y. · 2006

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Thirty minutes of mobile phone use showed no immediate effects on brain sensory processing in this small study.

Plain English Summary

Summary written for general audiences

Japanese researchers tested whether 30 minutes of mobile phone use affects brain activity by measuring electrical signals in the sensory cortex (the brain region that processes touch and sensation) in 12 healthy volunteers. They found no changes in brain activity after phone exposure compared to fake exposure. This suggests that short-term mobile phone use doesn't immediately alter how your brain processes sensory information.

Why This Matters

This study adds to a mixed body of research on mobile phones' immediate effects on brain function. While the researchers found no changes in sensory processing after 30 minutes of exposure, this represents just one specific aspect of brain activity measured over a relatively short timeframe. The science demonstrates that different brain functions may respond differently to EMF exposure, and effects might emerge over longer exposure periods or with different measurement techniques. What this means for you is that while this particular study is reassuring for short-term sensory function, it doesn't address the broader questions about long-term EMF exposure or other neurological effects that concern many researchers. The reality is that our understanding of how EMF affects the complex human brain remains incomplete, and prudent precaution still makes sense given the cumulative nature of daily phone use.

Exposure Information

Specific exposure levels were not quantified in this study. Duration: 30 minutes

Study Details

To investigate whether the pulsed high-frequency electromagnetic field (pulsed EMF) emitted by a mobile phone for 30 min has short-term effects on human somatosensory evoked potentials (SEPs).

We studied somatosensory evoked potentials (SEPs) in 12 normal volunteers before and after exposure ...

Neither SEPs nor their recovery function was affected by exposure to pulsed EMF emitted by a mobile ...

As far as the present methods are concerned, 30 min mobile phone use has no short-term effects on the human sensory cortex.

Cite This Study
Yuasa K, Arai N, Okabe S, Tarusawa Y, Nojima T, Hanajima R, Terao Y, Ugawa Y. (2006). Effects of thirty minutes mobile phone use on the human sensory cortex. Clin Neurophysiol.117(4):900-905, 2006.
Show BibTeX
@article{k_2006_effects_of_thirty_minutes_3500,
  author = {Yuasa K and Arai N and Okabe S and Tarusawa Y and Nojima T and Hanajima R and Terao Y and Ugawa Y.},
  title = {Effects of thirty minutes mobile phone use on the human sensory cortex.},
  year = {2006},
  
  url = {https://www.sciencedirect.com/science/article/abs/pii/S1388245705005092},
}

Quick Questions About This Study

No, 30 minutes of mobile phone use does not affect sensory cortex function. Japanese researchers found no changes in brain electrical signals that process touch and sensation after phone exposure compared to fake exposure in 12 healthy volunteers.
Short-term cell phone exposure does not alter brain sensory processing. A 2006 study measuring electrical activity in the sensory cortex found no immediate effects on how the brain processes touch and sensory information after 30 minutes of phone use.
Sensory evoked potentials do not change after mobile phone use. Researchers measured these electrical brain signals before and after 30 minutes of phone exposure and found no differences compared to sham exposure in healthy volunteers.
Pulsed EMF from phones does not affect brain recovery function. The study found that neither sensory evoked potentials nor their recovery function changed after 30 minutes of mobile phone exposure compared to fake phone use.
There are no immediate brain effects from 30-minute phone calls on sensory processing. Japanese researchers found no short-term changes in how the human sensory cortex processes electrical signals after mobile phone exposure versus sham exposure.