Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
Effects of mobile phone signals over BOLD response while performing a cognitive task
No Effects Found
Authors not listed · 2011
Short-term GSM phone signal exposure showed no immediate effects on brain activity during cognitive tasks in this fMRI study.
Plain English Summary
Summary written for general audiences
Italian researchers used fMRI brain scans to study whether GSM mobile phone signals affected brain activity during cognitive tasks. They found no changes in brain response patterns or reaction times when participants were exposed to real versus fake phone signals. The study suggests short-term mobile phone exposure doesn't measurably alter brain function during mental tasks.
Cite This Study
Unknown (2011). Effects of mobile phone signals over BOLD response while performing a cognitive task.
Show BibTeX
@article{effects_of_mobile_phone_signals_over_bold_response_while_performing_a_cognitive_task_ce729,
author = {Unknown},
title = {Effects of mobile phone signals over BOLD response while performing a cognitive task},
year = {2011},
doi = {10.1016/j.clinph.2011.06.007},
}Quick Questions About This Study
This Italian fMRI study found no changes in brain activity patterns when participants performed cognitive tasks while exposed to GSM mobile phone signals compared to sham exposure, suggesting no immediate detectable effects on brain function.
The study measured reaction times during somatosensory tasks and found no differences between real GSM exposure and placebo conditions, indicating mobile phone signals didn't impair cognitive response speed in this controlled setting.
Researchers examined BOLD responses in multiple brain areas including the inferior parietal lobule, insula, precentral and postcentral gyri during Go-NoGo tasks, finding normal activation patterns regardless of GSM signal exposure.
fMRI measures blood oxygen changes in the brain and can detect subtle activity differences, but this study's null results may reflect limitations in detecting very small effects or the specific exposure duration and cognitive tasks used.
No, this study only examined short-term GSM exposure during specific tasks. It doesn't address long-term effects, different frequencies used in modern phones, or other potential biological impacts beyond immediate brain activity changes.