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Short-term 3G phone radiation has significant effect on brain electrical activity: study
Netherlands Created: 13 Jul 2015
Abstract: The aim of this study was to investigate whether a 15-minute placement of a 3G dialling mobile phone causes direct changes in EEG activity compared to the placement of a sham phone.
Furthermore, it was investigated whether placement of the mobile phone on the ear or the heart would result in different outcomes.

Thirty-one healthy females participated. All subjects were measured twice: on one of the two days the mobile phone was attached to the ear, the other day to the chest.

In this single-blind, cross-over design, assessments in the sham phone condition were conducted directly preceding and following the mobile phone exposure.

During each assessment, EEG activity and radiofrequency radiation were recorded jointly. Delta, theta, alpha, slowbeta, fastbeta, and gamma activity was computed. The association between radiation exposure and the EEG was tested using multilevel random regression analyses with radiation as predictor of main interest.

Significant radiation effects were found for the alpha, slowbeta, fastbeta, and gamma bands.
When analyzed separately, ear location of the phone was associated with significant results, while chest placement was not. The results support the notion that EEG alterations are associated with mobile phone usage and that the effect is dependent on site of placement. Further studies are required to demonstrate the physiological relevance of these findings.

Related news:
Feb 2011, USA: Cell Phone Radiation Changes Brain Metabolism
Sep 2013, China: 4G Cell Phone Radiation Affects Brain Activity in Cell Phone Users
Click here to view the source article.
Source: PLoS One, Roggeveen et al., 08 Jun 2015

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