title: Effects of UMTS cellular phones on human hearing: results of the European project EMFnEAR.
abstract: Abstract The European project EMFnEAR was undertaken to assess potential changes in human auditory function after a short-term exposure to radiofrequency (RF) radiation produced by UMTS (Universal Mobile Telecommunication System) mobile phones. Participants were healthy young adults with no hearing or ear disorders. Auditory function was assessed immediately before and after exposure to radiofrequency radiation, and only the exposed ear was tested. Tests for the assessment of auditory function were hearing threshold level (HTL), distortion product otoacoustic emissions (DPOAE), contralateral suppression of transiently evoked otoacoustic emission (CAS effect on TEOAE), and auditory evoked potentials (AEP). The exposure consisted of speech at a typical conversational level delivered via an earphone to one ear, plus genuine or sham RF-radiation exposure produced by a commercial phone controlled by a personal computer. Results from 134 participants did not show any consistent pattern of effects on the auditory system after a 20-min UMTS exposure at the maximum output of the phone with 69 mW/kg SAR in the cochlea region in a double blind comparison of genuine and sham exposure. An isolated effect on the hearing threshold at high frequencies was identified, but this was statistically nonsignificant after correction for multiple comparisons. It is concluded that UMTS short-term exposure at the maximum output of consumer mobile phones does not cause measurable immediate effects on the human auditory system.
authors.affiliation: Istituto di Ingegneria Biomedica ISIB, Consiglio Nazionale delle Ricerche, Milan, Italy. marta.parazzini@polimi.it
authors.forename: Marta
authors.initials: M
authors.lastname: Parazzini
authors.forename: Federica
authors.initials: F
authors.lastname: Sibella
authors.forename: Mark E
authors.initials: ME
authors.lastname: Lutman
authors.forename: Srikanta
authors.initials: S
authors.lastname: Mishra
authors.forename: Annie
authors.initials: A
authors.lastname: Moulin
authors.forename: Mariola
authors.initials: M
authors.lastname: Sliwinska-Kowalska
authors.forename: Ewelina
authors.initials: E
authors.lastname: Woznicka
authors.forename: Piotr
authors.initials: P
authors.lastname: Politanski
authors.forename: Marek
authors.initials: M
authors.lastname: Zmyslony
authors.forename: Gyorgy
authors.initials: G
authors.lastname: Thuroczy
authors.forename: Ferenc
authors.initials: F
authors.lastname: Molnár
authors.forename: Györgyi
authors.initials: G
authors.lastname: Kubinyi
authors.forename: George
authors.initials: G
authors.lastname: Tavartkiladze
authors.forename: Stanislav
authors.initials: S
authors.lastname: Bronyakin
authors.forename: Ingrida
authors.initials: I
authors.lastname: Uloziene
authors.forename: Virgijlius
authors.initials: V
authors.lastname: Uloza
authors.forename: Egle
authors.initials: E
authors.lastname: Gradauskiene
authors.forename: Paolo
authors.initials: P
authors.lastname: Ravazzani
mesh_terms: D000293:Adolescent; D000328:Adult; D001307:Auditory Perception / Q000502:physiology* / Q000528:radiation effects*; D040421:Cell Phone; D004574:Electromagnetic Fields; D004781:Environmental Exposure; D005060:Europe; D005260:Female; D006309:Hearing / Q000502:physiology* / Q000528:radiation effects*; D006320:Hearing Tests; D006801:Humans; D008297:Male; D011829:Radiation Dosage; D055815:Young Adult