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Title of Journal: J Neural Transm

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Abbravation: Journal of Neural Transmission

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Springer Vienna

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DOI

10.1007/s004910050016

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ISSN

1435-1463

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Does exposure to extremely low frequency magnetic

Authors: F Capone M Dileone P Profice F Pilato G Musumeci G Minicuci F Ranieri R Cadossi S Setti P A Tonali V Di Lazzaro
Publish Date: 2009/02/03
Volume: 116, Issue: 3, Pages: 257-265
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Abstract

Behavioral and neurophysiological changes have been reported after exposure to extremely low frequency magnetic fields ELFMF both in animals and in humans The physiological bases of these effects are still poorly understood In vitro studies analyzed the effect of ELFMF applied in pulsed mode PEMFs on neuronal cultures showing an increase in excitatory neurotransmission Using transcranial brain stimulation we studied noninvasively the effect of PEMFs on several measures of cortical excitability in 22 healthy volunteers in 14 of the subjects we also evaluated the effects of sham field exposure After 45 min of PEMF exposure intracortical facilitation produced by paired pulse brain stimulation was significantly enhanced with an increase of about 20 while other parameters of cortical excitability remained unchanged Sham field exposure produced no effects The increase in pairedpulse facilitation a physiological parameter related to cortical glutamatergic activity suggests that PEMFs exposure may produce an enhancement in cortical excitatory neurotransmission This study suggests that PEMFs may produce functional changes in human brain

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