Related Experiment Videos
Nonlinear changes in brain electrical activity due to cell phone radiation
Andrew A Marino1, Erik Nilsen, Clifton Frilot
1Department of Orthopaedic Surgery, Louisiana State University Health Sciences Center, Shreveport, Louisiana 71130-3932, USA. amarino@lsuhsc.edu
Bioelectromagnetics
|June 24, 2003
Summary
Electromagnetic fields from cellular telephones significantly impact brain electrical activity (EEG) in rabbits. This study demonstrates that absorbed energy by brain tissue alters EEG patterns, increasing randomness.
Area of Science:
- Neuroscience
- Biophysics
- Electromagnetics
Background:
- Cellular telephones emit electromagnetic fields (EMF).
- The impact of EMF on brain electrical activity requires further investigation.
- Novel analytical methods are needed to assess subtle biological effects.
Purpose of the Study:
- To investigate the effect of cellular telephone EMF on rabbit brain electrical activity.
- To utilize a novel nonlinear analytical method for EEG analysis.
- To quantify changes in brain activity due to EMF exposure.
Main Methods:
- Electroencephalogram (EEG) data from rabbits exposed to cellular telephone EMF.
- Phase space embedding and local recurrence plot calculation.
- Recurrence quantitation analysis for statistical comparison of exposed and control epochs.
Main Results:
- Significant alterations in EEG were observed in 9 out of 10 rabbits exposed to cellular telephone EMF.
- Effects manifested as increased randomness in the EEG approximately 100-300 ms after exposure initiation.
- Control experiments confirmed the biological origin of the effect, ruling out analytical artifacts or electrode absorption.
Conclusions:
- Cellular telephone EMF can alter brain function in rabbits during normal use.
- The observed changes in EEG are a consequence of energy absorption by brain tissue.
- Tissue-specific absorption of EMF energy is critical in determining the biological effects on brain activity.