Effects on the Inner Auditory System of Sprague-Dawley Rats of 900 and 1800 MHZ GSM Mobile Phones

M. Parazzini, C. Marino, P. Galloni, M. Piscitelli, G. Lovisolo, G. Tognola, and P. Ravazzani (Italy


Biological effect of electromagnetic radiation; auditorysystem; distortion product otoacoustic emissions;Sprague-Dawley rats.


The cochlear functionality of Sprague-Dawley rats exposed to electromagnetic (EM) fields at the typical frequencies of GSM mobile phones (900 and 1800 MHz) was tested by Distortion Product Otoacoustic Emissions (DPOAE) that are known as indicator of the cochlea status. A population of 48 rats was divided in exposed (16 at 900 and 16 at 1800 MHz) and sham (16) group. 3 sets of 4 loop antennas, one for sham and two for exposed animals performed the exposure. DPOAE tests were carried out before, during and after the exposure. The results of this study show that no statistically significant differences were found between the DPOAE recorded from the two groups.

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