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GSM straling beinvloedt hersenexcitatie
Mobile phone emissions and human brain excitability
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 email@example.com)">(firstname.lastname@example.org)
*Correspondence to Paolo Maria Rossini, Department of Neuroscience, Hospital Fatebenefratelli, Isola Tiberina 39, 00186 Rome, Italy
Telecom Italia Mobile; Grant Number: EC7305
Associazione Fatebenefratelli per la Ricerca
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).
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.
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.
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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