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GSM straling beinvloedt hersenexcitatie Mobile phone emissions and human brain excitability www3.interscience.wiley.com/cgi-bin/abstract/112660876/ABSTRACT Florinda Ferreri, MD 1 2, Giuseppe Curcio, PhD 1 3, Patrizio Pasqualetti, PhD 2, Luigi De Gennaro, PhD 3, Rita Fini, Tech 1 2, Paolo Maria Rossini, MD, PhD 1 2 4 * 1Department of Neurology, University Campus Biomedico, Isola Tiberina 2Associazione Fatebenefratelli per la Ricerca, Department of Neuroscience, Hospital Fatebenefratelli, Isola Tiberina 3Department of Psychology, University La Sapienza, Rome 4Istituto di Ricovero e Cura a Carattere Scientifico Centro S. Giovanni di Dio, Hospital Fatebenefratelli, Brescia, Italy email: Paolo Maria Rossini paolomaria.rossini@afar.it)">(paolomaria.rossini@afar.it) *Correspondence to Paolo Maria Rossini, Department of Neuroscience, Hospital Fatebenefratelli, Isola Tiberina 39, 00186 Rome, Italy Funded by: Telecom Italia Mobile; Grant Number: EC7305 Associazione Fatebenefratelli per la Ricerca Abstract Objective To test - via Transcranial Magnetic Stimulation (TMS) - the excitability of each brain hemisphere after real or sham exposure to the electromagnetic field (EMF) generated by a mobile phone operating in the Global System for Mobile Communication (GSM). Methods Fifteen male volunteers attended two experimental sessions, one week apart, in a cross-over, double-blind paradigm. In one session the signal was turned ON (EMF-on, real exposure), in the other it was turned OFF (EMF-off, sham exposure), for 45 minutes. Motor Evoked Potentials (MEPs) were recorded using a paired-pulse paradigm (testing intracortical excitability with 1 to 17 ms interstimulus intervals), both before and at different times after exposure to the EMF. Short Intracortical Inhibition (SICI) and Facilitation (ICF) curves were evaluated both on the exposed and non-exposed hemispheres. Tympanic temperature was collected during each session. Results The intracortical excitability curve becomes significantly modified during real exposure, with SICI being reduced and ICF enhanced in the acutely exposed brain hemisphere as compared to the contralateral, non-exposed hemisphere or to sham exposure. Tympanic temperature showed no significant main effect or interactions. Interpretation These results demonstrate that GSM-EMFs modify brain excitability. Possible implications and applications are discussed. Ann Neurol 2006 Received: 27 November 2005; Revised: 29 April 2006; Accepted: 2 May 2006
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