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Effects of 2G and 3G mobile phones on performance and electrophysiology in adolescents, young adults and older adults.

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Leung S, Croft RJ, McKenzie RJ, Iskra S, Silber B, Cooper NR, O'Neill B, Cropley V, Diaz-Trujillo A, Hamblin D, Simpson D. · 2011

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Mobile phone signals measurably impaired cognitive performance in teens and altered brain wave patterns across all age groups during mental tasks.

Plain English Summary

Summary written for general audiences

Researchers tested how 2G and 3G mobile phone signals affect brain function in 103 people across three age groups (teens, young adults, and older adults). They found that 3G exposure reduced cognitive accuracy, particularly in adolescents, while both 2G and 3G signals altered brain wave patterns during mental tasks. The study used careful controls and brain monitoring to detect these subtle but measurable changes in cognitive performance.

Why This Matters

This research adds important evidence to our understanding of how mobile phone radiation affects developing brains. The fact that adolescents showed the most pronounced cognitive impairment during 3G exposure is particularly concerning, given that teens are among the heaviest mobile phone users. The study's strength lies in its rigorous double-blind design and use of brain wave monitoring to detect changes that might not be obvious in behavior alone. What makes this research especially relevant is that it examined real-world mobile phone technologies that millions of people use daily. The finding that both 2G and 3G signals altered brain activity patterns suggests these effects aren't limited to older technologies. For parents and educators, this study reinforces the importance of considering cognitive impacts when developing policies around young people's technology use.

Exposure Information

Specific exposure levels were not quantified in this study.

Study Details

This study examined sensory and cognitive processing in adolescents, young adults and older adults, when exposed to 2nd (2G) and 3rd (3G) generation mobile phone signals.

Tests employed were the auditory 3-stimulus oddball and the N-back. Forty-one 13-15 year olds, forty...

3-Stimulus oddball task: Behavioural: accuracy and reaction time of responses to targets were not af...

Employing tasks tailored to each individual's ability level, this study provides support for an effect of acute 2G and 3G exposure on human cognitive function.

Cite This Study
Leung S, Croft RJ, McKenzie RJ, Iskra S, Silber B, Cooper NR, O'Neill B, Cropley V, Diaz-Trujillo A, Hamblin D, Simpson D. (2011). Effects of 2G and 3G mobile phones on performance and electrophysiology in adolescents, young adults and older adults. Clin Neurophysiol. 122(11):2203-2216, 2011.
Show BibTeX
@article{s_2011_effects_of_2g_and_2354,
  author = {Leung S and Croft RJ and McKenzie RJ and Iskra S and Silber B and Cooper NR and O'Neill B and Cropley V and Diaz-Trujillo A and Hamblin D and Simpson D.},
  title = {Effects of 2G and 3G mobile phones on performance and electrophysiology in adolescents, young adults and older adults.},
  year = {2011},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/21570341/},
}
PubMed: 21570341

Cited By (56 papers)

View all 56 citing papers on Semantic Scholar

Quick Questions About This Study

Yes, research shows cell phone radiation can impact teenage brain function. A 2011 study found 3G signals reduced cognitive accuracy specifically in adolescents during mental tasks, while both 2G and 3G exposure altered brain wave patterns across all age groups tested.
Research indicates 3G radiation can affect cognitive performance. A controlled study found people performed less accurately on memory tasks during 3G exposure, with teenagers showing the most pronounced effects compared to young adults and older participants.
Both 2G and 3G signals affect brain activity, but differently. Research shows 3G exposure specifically reduced cognitive accuracy in teens, while both 2G and 3G altered brain wave patterns during mental tasks in all age groups studied.
Yes, mobile phone radiation measurably alters brain wave patterns. A study monitoring brain activity found both 2G and 3G signals delayed normal brain wave responses during cognitive tasks, independent of the person's age group.
Research suggests adolescents may be more vulnerable to certain cognitive effects from cell phone radiation. A 2011 study found 3G exposure reduced accuracy on memory tasks specifically in teenagers, while other age groups showed no behavioral changes.