Electromagnetic fields from mobile phones do not affect the inner auditory system of Sprague-Dawley rats

Paolo Galloni, Marta Parazzini, Marta Piscitelli, Rosanna Pinto, Giorgio A. Lovisolo, Gabriella Tognola, Carmela Marino, Paolo Ravazzani

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Abstract

The auditory system is the first biological structure facing the electromagnetic fields emitted by mobile phones. The aim of this study was to evaluate the cochlear functionality of Sprague-Dawley rats exposed to electromagnetic fields at the typical frequencies of GSM mobile phones (900 and 1800 MHz) by distortion product otoacoustic emissions, which are a well-known indicator of the status of the cochlea's outer hair cells. A population of 48 rats was divided into exposed and sham-exposed groups. Three sets of four loop antennas, one for sham-exposed animals and two for exposed animals, were used for the local exposures. Rats were exposed 2 h/day, 5 days/week for 4 weeks at a local SAR of 2 W/kg in the ear. Distortion product otoacoustic emissions tests were carried out before, during and after the exposure. The analysis of the data shows no statistically significant differences between the audiological signals recorded for the different groups. © 2005 by Radiation Research Society.
Original languageEnglish
Pages (from-to)798 - 804
Number of pages7
JournalRadiation Research
Volume164
Issue number6
DOIs
Publication statusPublished - Dec 2005
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Radiation
  • Biophysics
  • Radiology Nuclear Medicine and imaging

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