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Long-Term Evolution Electromagnetic Fields Exposure Modulates the Resting State EEG on Alpha and Beta Bands
Lei Yang1, Qinghua Chen2, Bin Lv1
11 Bioelectromagnetic Lab, China Academy of Telecommunication Research of Ministry of Industry and Information Technology, Beijing, China.
Clinical EEG and Neuroscience
|April 28, 2016
Summary
Exposure to Long-term Evolution (LTE) electromagnetic fields (EMF) from mobile phones may alter brain activity. This study found reduced neural function in specific brain regions after LTE EMF exposure, impacting alpha and beta brainwaves.
Area of Science:
- Neuroscience
- Biophysics
- Telecommunications Engineering
Background:
- Long-term evolution (LTE) systems are globally prevalent, raising concerns about potential neural effects from emitted electromagnetic fields (EMF).
- Limited research exists on the impact of LTE EMF exposure on human neural function.
Purpose of the Study:
- To investigate the effects of LTE EMF exposure on human electroencephalogram (EEG) activity.
- To quantify changes in neural function associated with controlled LTE EMF exposure.
Main Methods:
- Utilized a specialized LTE EMF exposure system simulating maximum mobile phone emission levels.
- Conducted numerical simulations to verify specific absorption rate (SAR) remained below established safety limits.
- Measured changes in EEG spectral power and interhemispheric coherence during and after exposure.
Main Results:
- LTE EMF exposure led to a reduction in spectral power within the alpha and beta frequency bands.
- A decrease in interhemispheric coherence was observed in the frontal and temporal brain regions.
- No significant alterations in EEG parameters were detected in different timeslots during or after the exposure period.
Conclusions:
- LTE EMF exposure can modulate human neural activity, specifically affecting alpha and beta brainwave patterns.
- Findings suggest a measurable impact on brain function, particularly in frontal and temporal regions.
- Results align with previous functional magnetic resonance imaging (fMRI) studies, reinforcing the observed neural changes.
