Mobile phone emissions and human brain excitability

Ferreri, Florinda; Curcio, Giuseppe; Pasqualetti, Patrizio; Gennaro, Luigi De; Fini, Rita; Rossini, Paolo Maria

doi:10.1002/ana.20906

Cited by 119 publications

(71 citation statements)

References 81 publications

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Section: Discussionmentioning

confidence: 99%

“…However, on the basis of earlier reported data, it has been shown that intracortical excitability of the motor cortex was modified by acute exposure to GSM 900 (Ferreri et al 2006). Intracortical inhibition/facilitation (ICI/ ICF) curves were investigated, and results showed that ICI is reduced and ICF is enhanced after exposure to GSM signal (Ferreri et al 2006). It has been suggested that ICI is mediated by GABA-A receptors (Hanajima et al 1998), ICF is mediated by glutamatergic N-methyl-D-aspartate (NMDA) (Ziemann et al 1998), and an imbalance between ICI and ICF may lead to changes in the intracortical excitability (Sanger et al 2001).…”

Section: Discussionmentioning

confidence: 99%

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Radiofrequency signal affects alpha band in resting electroencephalogram

Ghosn

Yahia-Chérif

Hugueville

et al. 2015

Journal of Neurophysiology

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The aim of the present work was to investigate the effects of the radiofrequency (RF) electromagnetic fields (EMFs) on human resting EEG with a control of some parameters that are known to affect alpha band, such as electrode impedance, salivary cortisol, and caffeine. Eyes-open and eyes-closed resting EEG data were recorded in 26 healthy young subjects under two conditions: sham exposure and real exposure in double-blind, counterbalanced, crossover design. Spectral power of EEG rhythms was calculated for the alpha band (8 -12 Hz). Saliva samples were collected before and after the study. Salivary cortisol and caffeine were assessed by ELISA and HPLC, respectively. The electrode impedance was recorded at the beginning of each run. Compared with the sham session, the exposure session showed a statistically significant (P Ͻ 0.0001) decrease of the alpha band spectral power during closed-eyes condition. This effect persisted in the postexposure session (P Ͻ 0.0001). No significant changes were detected in electrode impedance, salivary cortisol, and caffeine in the sham session compared with the exposure one. These results suggest that GSM-EMFs of a mobile phone affect the alpha band within spectral power of resting human EEG. electroencephalogram; radio frequency; mobile phone; alpha band EMERGING TECHNOLOGIES IN MOBILE telecommunications, such as radio frequency fields (RF) and microwave radiation, are widely used in our modern society. Prominent examples are the wireless Internet network and mobile phone communications, which are particularly widespread. The extensive use of mobile phones (MP) increases the exposure of human beings to radiofrequency electromagnetic fields. During a phone call, given the close proximity of the MP to the user's head, a part of the electromagnetic field (EMF) can be absorbed by the head and the brain (Schönborn et al. 1998). This exposure to EMF has raised questions about possible effects of the EMF of mobile phones on brain activity.Some earlier studies have investigated the effects of EMFs on resting cerebral activity with somewhat mixed results, but more recently, there has been consistent data, indicating the existence of exposure effects on the alpha bands of the resting EEG.Indeed, data reported by some authors showed an increase in EEG power in the alpha frequency band (Cook et al. 2004;Croft et al.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Radiofrequency signal affects alpha band in resting electroencephalogram

Ghosn

Yahia-Chérif

Hugueville

et al. 2015

Journal of Neurophysiology

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“…In recent years, most studies have shown an influence of RF-EMFs on waking electroencephalogram, particularly on alpha rhythm (Croft et al, 2002(Croft et al, , 2008Curcio et al, 2005), as well as on sleep electroencephalogram, in which RF-EMFs influenced the alpha-sigma range (Huber et al, 2002;Regel et al, 2007). Significant effects on cerebral excitability have also been reported, with a localized, transient, and reversible increase of responsiveness of motor cortex as a function of GSM (Global System for Mobile Communications) exposure (Ferreri et al, 2006). Moreover, improvements on attentional performance have been reported as a consequence of GSM irradiation (Koivisto et al, 2000;Curcio et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Acute Mobile Phones Exposure Affects Frontal Cortex Hemodynamics as Evidenced by Functional Near-Infrared Spectroscopy

Curcio

Ferrara

Limongi

et al. 2009

J Cereb Blood Flow Metab

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This study aimed to evaluate by functional near-infrared spectroscopy (fNIRS), the effects induced by an acute exposure (40 mins) to a GSM (Global System for Mobile Communications) signal emitted by a mobile phone (MP) on the oxygenation of the frontal cortex. Eleven healthy volunteers underwent two sessions (Real and Sham exposure) after a crossover, randomized, double-blind paradigm. The whole procedure lasted 60 mins: 10-mins baseline (Bsl), 40-mins (Exposure), and 10-mins recovery (Post-Exp). Together with frontal hemodynamics, heart rate, objective and subjective vigilance, and self-evaluation of subjective symptoms were also assessed. The fNIRS results showed a slight influence of the GSM signal on frontal cortex, with a linear increase in [HHb] as a function of time in the Real exposure condition (F 4,40 = 2.67; P = 0.04). No other measure showed any GSM exposure-dependent changes. These results suggest that fNIRS is a convenient tool for safely and noninvasively investigating the cortical activation in MP exposure experimental settings. Given the short-term effects observed in this study, the results should be confirmed on a larger sample size and using a multichannel instrument that allows the investigation of a wider portion of the frontal cortex.

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“…Ferreri et al studied the mobile phone emissions and human brain excitability [3] and Keetley et al studied the neuropsychological squeal of digital mobile phone exposure in humans [4], while Lin discussed the cataracts and personal communication radiation [5]. The effects of electromagnetic radiation of mobile phones on the central nervous system have been studied by Hossmann and Hermann [6] and the thermal effects of radiation from cellular telephones have been studied by Wainwright [7].…”

Section: Introductionmentioning

confidence: 99%

The Skin Tissue of the Human Head Subjected to Thermal Diffusion

Al-Lehaibi

2018

Mathematical Problems in Engineering

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We consider a problem of skin tissue of the human head subjected to thermal diffusion with relaxation time. The bounding surface of the tissue of the human head is subjected to a thermal shock. The chemical potential is also assumed to be a known function of time on the bounding plane. Laplace transform techniques are used and the results are obtained numerically using a numerical method for the inversion of the Laplace transform based on Tzou method. The temperature distribution and the concentration distribution are obtained and represented in figures. According to the results, the values of the time and the distance have significant effects on the temperature increment and the concentration. The values of the temperature increment and the concentration increase when the time increases and decrease when the distance increases.

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Mobile phone emissions and human brain excitability

Abstract: These results demonstrate that GSM-EMFs modify brain excitability. Possible implications and applications are discussed.

Cited by 119 publications

References 81 publications

Radiofrequency signal affects alpha band in resting electroencephalogram

Radiofrequency signal affects alpha band in resting electroencephalogram

Acute Mobile Phones Exposure Affects Frontal Cortex Hemodynamics as Evidenced by Functional Near-Infrared Spectroscopy

The Skin Tissue of the Human Head Subjected to Thermal Diffusion

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