Mobile phone emission modulates event-related desynchronization of alpha rhythms and cognitive-motor performance in healthy humans

Autor: Paola Buffo, Claudio Babiloni, Paolo Maria Rossini, Silvia Sergio, Daniela Iacoviello, Fabrizio Vecchio
Jazyk: angličtina
Rok vydání: 2012
Předmět:
go/no-go task
evoked potentials
Poison control
Audiology
Electroencephalography
middle aged
double-blind method
male
performance in healthy humans
humans
adult
eeg
electromagnetic fields
mobile phone emission
cellular phone
psychomotor performance
cerebral cortex
young adult
female
adverse effects
electroencephalography phase synchronization
cross-over studies
alpha band
physiology
alpha rhythms
reaction time
alpha rhythm
event-related desynchronization (erd)
Temporal cortex
medicine.diagnostic_test
Cognition
Human brain
Sensory Systems
Electroencephalography Phase Synchronization
Settore MED/26 - NEUROLOGIA
medicine.anatomical_structure
Neurology
Psychology
medicine.medical_specialty
animal structures
Stimulus (physiology)
Rhythm
Physiology (medical)
medicine
Communication
business.industry
Neurology (clinical)
business
Cell Phone
Popis: Objectives It has been shown that electromagnetic fields of Global System for Mobile Communications phone (GSM-EMFs) affect human brain rhythms ( Vecchio et al., 2007 , Vecchio et al., 2010 ), but it is not yet clear whether these effects are related to alterations of cognitive functions. Methods Eleven healthy adults underwent two electroencephalographic (EEG) sessions separated by 1 week, following a cross-over, placebo-controlled, double-blind paradigm. In both sessions, they performed a visual go/no-go task before real exposure to GSM-EMFs or after a sham condition with no EMF exposure. In the GSM real session, temporal cortex was continuously exposed to GSM-EMFs for 45 min. In the sham session, the subjects were not aware that the EMFs had been switched off for the duration of the experiment. In the go/no-go task, a central fixation stimulus was followed by a green (50% of probability) or red visual stimulus. Subjects had to press the mouse button after the green stimuli (go trials). With reference to a baseline period, power decrease of low- (about 8–10 Hz) and high-frequency (about 10–12 Hz) alpha rhythms indexed the cortical activity. Results It was found less power decrease of widely distributed high-frequency alpha rhythms and faster reaction time to go stimuli in the post- than pre-exposure period of the GSM session. No effect was found in the sham session. Conclusions These results suggest that the peak amplitude of alpha ERD and the reaction time to the go stimuli are modulated by the effect of the GSM-EMFs on the cortical activity. Significance Exposure to GSM-EMFs for 45 min may enhance human cortical neural efficiency and simple cognitive–motor processes in healthy adults.
Databáze: OpenAIRE
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