Influence on the mechanisms of generation of distortion product otoacoustic emissions of mobile phone exposure


Parazzini, M., Bell, S., Thuroczy, G., Molnar, F., Tognola, G., Lutman, M.E. and Ravazzani, P. (2005) Influence on the mechanisms of generation of distortion product otoacoustic emissions of mobile phone exposure. Hearing Research, 208, (1-2), 68-78. (doi:10.1016/j.heares.2005.04.013).

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Description/Abstract

Mobile phones have become very commonly used throughout the world within a short period of time. Although there is no clear evidence to show harmful physiological effects of electromagnetic fields (EMF) at the levels used by mobile phones, there is widespread public concern that there may be potential for harm. Because mobile phones are usually held close to the ear, it is appropriate to study effects on hearing. In this study, the outer hair cell function of 15 subjects was assessed by DPOAE recording before and after a controlled EMF exposure. To increase the sensitivity of DPOAE recording to identify even small changes in hearing function, an inverse fast Fourier transform (IFFT) analysis and time-domain windowing was applied to separate the two generation mechanisms of DPOAE, the so-called place-fixed and wave-fixed mechanisms, in order to verify if EMF can affects the two DPOAE emission mechanisms. Statistical analysis of the data showed that 10 min of EMF exposure at the maximum power (2 W at 900 MHz or 1 W at 1800 MHz) does not induce any changes in either DPOAE generation mechanism.

Item Type: Article
ISSNs: 0378-5955 (print)
Related URLs:
Keywords: distortion product otoacoustic emissions, dpoae generation mechanism, mobile phone
Subjects: T Technology > T Technology (General)
R Medicine > RF Otorhinolaryngology
R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
Divisions: University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Human Sciences
ePrint ID: 28408
Date Deposited: 02 May 2006
Last Modified: 27 Mar 2014 18:17
Contact Email Address: marta.parazzini@polimi.it
URI: http://eprints.soton.ac.uk/id/eprint/28408

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