Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
Effects of 915 MHz electromagnetic-field radiation in TEM cell on the blood-brain barrier and neurons in the rat brain
No Effects Found
Authors not listed · 2009
Independent Japanese researchers failed to replicate Swedish findings of brain damage from 915 MHz radiation exposure.
Plain English Summary
Summary written for general audiences
Japanese researchers exposed 64 rats to 915 MHz electromagnetic fields (similar to older cordless phones) for 2 hours at various power levels, then examined their brains 14 and 50 days later. They found no evidence of blood-brain barrier damage or neuron death, contradicting earlier Swedish research that claimed such effects occurred.
Exposure Information
Cite This Study
Unknown (2009). Effects of 915 MHz electromagnetic-field radiation in TEM cell on the blood-brain barrier and neurons in the rat brain.
Show BibTeX
@article{effects_of_915_mhz_electromagnetic_field_radiation_in_tem_cell_on_the_blood_brain_barrier_and_neurons_in_the_rat_brain_ce1929,
author = {Unknown},
title = {Effects of 915 MHz electromagnetic-field radiation in TEM cell on the blood-brain barrier and neurons in the rat brain},
year = {2009},
doi = {10.1667/RR1542.1},
}Quick Questions About This Study
No. This study found no evidence of albumin leakage through the blood-brain barrier in rats exposed to 915 MHz electromagnetic fields, contradicting earlier research that claimed such damage occurred.
Researchers tested specific absorption rates of 0.02, 0.2, and 2.0 W/kg over 2 hours. These represent low to moderate exposure levels comparable to various wireless devices.
No significant increase in dark neurons (damaged brain cells) was observed in any exposure group compared to control animals, even 50 days after the 2-hour electromagnetic field exposure.
Despite using identical methods and exposure protocols as the original Swedish study, Japanese researchers found no brain damage, suggesting the original alarming findings may not be reproducible.
Researchers examined rat brains at two time points: 14 days and 50 days after the single 2-hour electromagnetic field exposure to check for delayed damage effects.