Medical/biological study (experimental study)

Influence of the Interaction of a 900 MHz Signal with Gender on EEG Energy: Experimental Study on the Influence of 900 MHz Radiation on EEG med./bio.

By: Nanou E, Tsiafakis V, Kapareliotis E, Papageorgiou C, Rabavilas A, Capsalis C

Published in: Environmentalist 2005; 25 (2-4): 173-179

Aim of study (acc. to author)

To study the effects of electromagnetic fields emitted by cellular phones on human electroencephalogram during an auditory memory task.

Background/further details

19 healthy subjects (10 female, 9 male) participated.
A gender specific influence should be investigated.

Endpoint

effects on the neurological system: EEG during an auditory memory task

Exposure

- mobile communications
- mobile phone

Exposure	Parameters
Exposure 1: 900 MHz Exposure duration: continuous for about 45 min	power: 64 mW mean electric field strength: 3 V/m

Exposure 1

Main characteristics

Frequency	900 MHz
Type	electromagnetic field
Exposure duration	continuous for about 45 min

Exposure setup

Exposure source	dipole antenna
Chamber	Faraday screen room
Setup	The subjects sat on an anatomical chair, and a certified dipole antenna was fixed near their right ear at a constant distance.
Sham exposure	A sham exposure was conducted.
Additional info	The subjects attended two sessions, two weeks apart, with or without radiation in random order.

Parameters

Measurand	Value	Type	Method	Mass	Remarks
power	64 mW	mean	-	-	-
electric field strength	3 V/m	-	-	-	-

Exposed system:

human
partial body: head

Methods Endpoint/measurement parameters/methodology

effects on the neurological system: EEG
cognitive/behavioral endpoints: auditory memory task with numbers after a warning stimulus (3000 Hz or 500 Hz tone)

Investigated system:

investigation on living organism

Investigated organ system:

brain/CNS

Time of investigation:

after exposure

Main outcome of study (acc. to author)

Without irradiation the power spectrum of males was greater than that of females.
Under the influence of electromagnetic field the power spectrum of the males EEG was decreased while that of the females was increased.
The data show that the effect of the electromagnetic field exposure is gender dependent.

Study character:

medical/biological study
experimental study
full/main study

Study funded by

not stated/no funding

de Tommaso M et al. (2009): Mobile phones exposure induces changes of contingent negative variation in humans
Nanou E et al. (2009): Influence of a 1,800 MHz electromagnetic field on the EEG energy
Hountala CD et al. (2008): The spectral power coherence of the EEG under different EMF conditions
Krause CM et al. (2007): Effects of pulsed and continuous wave 902 MHz mobile phone exposure on brain oscillatory activity during cognitive processing
Krause CM et al. (2006): Mobile phone effects on children's event-related oscillatory EEG during an auditory memory task
Maby E et al. (2005): Effects of GSM signals on auditory evoked responses
Papageorgiou CC et al. (2004): Gender related differences on the EEG during a simulated mobile phone signal
Krause CM et al. (2004): Effects of electromagnetic field emitted by cellular phones on the EEG during an auditory memory task: a double blind replication study
D'Costa H et al. (2003): Human brain wave activity during exposure to radiofrequency field emissions from mobile phones
Krause CM et al. (2000): Effects of electromagnetic field emitted by cellular phones on the EEG during a memory task
Hietanen M et al. (2000): Human brain activity during exposure to radiofrequency fields emitted by cellular phones
Krause CM et al. (2000): Effects of electromagnetic fields emitted by cellular phones on the electroencephalogram during a visual working memory task
Roschke J et al. (1997): No short-term effects of digital mobile radio telephone on the awake human electroencephalogram