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Brain & Nervous System

Effects of high frequency electromagnetic field (EMF) emitted by mobile phones on the human motor cortex.

No Effects Found

Inomata-Terada S, Okabe S, Arai N, Hanajima R, Terao Y, Frubayashi T, Ugawa Y. · 2007

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Thirty minutes of cell phone exposure showed no immediate effects on brain motor control in this small Japanese study.

Plain English Summary

Summary written for general audiences

Japanese researchers tested whether 30 minutes of cell phone radiation affects brain motor control by measuring electrical signals in the motor cortex (the brain region that controls movement) before and after phone exposure in 10 healthy volunteers and 2 multiple sclerosis patients. They found no changes in brain activity or motor function after phone exposure compared to fake exposure. The study suggests short-term cell phone use doesn't immediately impair the brain's ability to control muscle movement.

Study Details

We investigated whether the pulsed high frequency electromagnetic field (EMF) emitted by a mobile phone has short term effects on the human motor cortex.

We measured motor evoked potentials (MEPs) elicited by single pulse transcranial magnetic stimulatio...

MEPs to single pulse TMS were also recorded in two patients with multiple sclerosis showing temperat...

Cite This Study
Inomata-Terada S, Okabe S, Arai N, Hanajima R, Terao Y, Frubayashi T, Ugawa Y. (2007). Effects of high frequency electromagnetic field (EMF) emitted by mobile phones on the human motor cortex. Bioelectromagnetics.28(7):553-561, 2007.
Show BibTeX
@article{s_2007_effects_of_high_frequency_3102,
  author = {Inomata-Terada S and Okabe S and Arai N and Hanajima R and Terao Y and Frubayashi T and Ugawa Y.},
  title = {Effects of high frequency electromagnetic field (EMF) emitted by mobile phones on the human motor cortex.},
  year = {2007},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/17516508/},
}
PubMed: 17516508

Cited By (31 papers)

Quick Questions About This Study

A 2007 Japanese study found that 30 minutes of cell phone radiation exposure had no effect on motor cortex function in healthy volunteers and multiple sclerosis patients. Researchers measured brain electrical signals controlling movement before and after phone exposure and detected no changes in motor control abilities.
Research testing multiple sclerosis patients found that 30 minutes of cell phone exposure did not worsen motor symptoms or affect brain signals controlling movement. Even though these patients showed heat-sensitive neurological symptoms from hot baths, mobile phone radiation caused no additional motor impairment.
A controlled study found no immediate effects on brain motor control after 30 minutes of cell phone exposure. Researchers measured electrical signals in the motor cortex before and after phone use and detected no changes in the brain's ability to control muscle movement.
Japanese researchers found that 30 minutes of cell phone radiation did not alter brain responses to transcranial magnetic stimulation (TMS). Motor evoked potentials and short-interval cortical inhibition measurements remained unchanged after phone exposure compared to sham exposure in both healthy volunteers and neurological patients.
A 2007 study found no immediate impairment of muscle movement control after 30 minutes of cell phone exposure. Researchers tested brain motor cortex function in volunteers and found no changes in the electrical signals that control muscle movement compared to fake exposure conditions.