Mobile telephone use effects an peripheral audiovestibular function: A case-control study


Bamiou, DE; Ceranic, B; Cox, R; Watt, H; Chadwick, P; Luxon, LM; (2008) Mobile telephone use effects an peripheral audiovestibular function: A case-control study. Bioelectromagnetics, 29 (2). pp. 108-117. ISSN 0197-8462 DOI: https://doi.org/10.1002/bem.20369

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Abstract

Low level radio-frequency (RF) signals may produce disorientation, headache and nausea. This double blind study tested nine case-subjects, who complained of various symptoms after prolonged mobile telephone use and 21 control subjects. Each subject underwent a series of trials, in which a dummy mobile telephone exposure system was held to each ear for 30 min in (a) pulsed, (b) continuous RF emission or, (c) no emission test modes. In the active pulsed and continuous modes the same mean power as the output of a typical handset was delivered at a carrier frequency of 882 MHz and at a maximum specific absorption rate (SAR) value of 1.3 W kg(-1) (+/- 30%). In Experiment I (auditory), transient evoked otoacoustic emissions (TEOAE), which assess the outer hair cells in the inner ear, were conducted. In Experiment II (vestibular) the vestibulo-ocular reflex was recorded by video-oculography (VOG), at baseline and immediately post exposure. There were no significant TEOAE changes from baseline to post-exposure recording for any of the exposures and no significant differences in the TEOAEs' change from baseline to post exposure between cases and controls. The VOG did not identify any effect of the exposure on the vestibular end organ in either cases or controls. In conclusion, 30 min exposure to mobile phone RF did not show any immediate effects on vestibulocochlear function as measured by TEOAE and the VOR.

Item Type: Article
Keywords: Adult, Body Burden, Case-Control Studies, Cellular Phone, Dose-Response Relationship, Radiation, Double-Blind Method, Female, Humans, Male, Middle Aged, Otoacoustic Emissions, Spontaneous, physiology, radiation effects, Radiation Dosage, Radio Waves, Reflex, Vestibulo-Ocular, physiology, radiation effects, Relative Biological Effectiveness
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Medical Statistics
PubMed ID: 17929266
Web of Science ID: 253250000004
URI: http://researchonline.lshtm.ac.uk/id/eprint/7970

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