Study type: Medical/biological study (experimental study)

EEG bioeffects on cochlear deaf from cellular phones. med./bio.

Published in: Environmentalist 2007; 27 (4): 519-523

Aim of study (acc. to author)

To study the effect of electromagnetic induction through mobile phones on the human brain.

Background/further details

EEG data of healthy normal individuals (n=12) were compared to those of cochlear deaf individuals (n=12), to investigate an induced electromagnetic effect that is independent from sound waves. First, EEG recordings were assessed at baseline (5 min with eyes closed and phone off) and then during 5 min conversation with the phone placed on the right ear.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 880–960 MHz
Modulation type: pulsed
Exposure duration: continuous for 5 min
  • power: 2 W maximum
  • SAR: 0.955 W/kg maximum

General information

For more details, see [Bardasano et al., 2005].

Exposure 1

Main characteristics
Frequency 880–960 MHz
Type
Charakteristic
Exposure duration continuous for 5 min
Additional info frequency band
Modulation
Modulation type pulsed
Additional info

GSM

Exposure setup
Exposure source
Distance between exposed object and exposure source 2 cm
Chamber Each subject was comfortably seated on a plastic chair inside a Faraday chamber.
Setup The mobile phone was held by an insulated device over the right ear, 2 cm from the auricle to avoid thermal effects.
Additional info The EEG of subjects, relaxed and with their eyes closed, was recorded while listening to a 5-min conversation, first with the mobile phone off (basal state) and then with the phone on.
Parameters
Measurand Value Type Method Mass Remarks
power 2 W maximum - - -
SAR 0.955 W/kg maximum - - -

Reference articles

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • before exposure
  • during exposure

Main outcome of study (acc. to author)

By comparing the EEG data of both groups, an increase in the amplitutes of alpha waves and theta waves, regardless of the sound waves, has been observed. This suggests an inductive direct non-thermal effect of the mobile phone signal on the brain.

Study character:

Study funded by

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