Study type: Medical/biological study (experimental study)

Does head-only exposure to GSM-900 electromagnetic fields affect the performance of rats in spatial learning tasks? med./bio.

Published in: Behav Brain Res 2002; 129 (1-2): 203-210

Aim of study (acc. to author)

To determine whether learning capacities are altered in rats exposed to GSM electromagnetic fields (900 MHz).



Exposure Parameters
Exposure 1: 900 MHz
Modulation type: pulsed
Exposure duration: repeated daily exposure for 45 min for 10 or 14 days
  • SAR: 1 W/kg average over mass (brain)
  • SAR: 3.5 W/kg average over mass (brain)

Exposure 1

Main characteristics
Frequency 900 MHz
Exposure duration repeated daily exposure for 45 min for 10 or 14 days
Additional info Reference article: Chaillou S, Levaque P, Luc J, Dale C, Brishoual M, Dulou P-E, Wiart J. Dosimetric study of a loop antenna for local exposure of rats at 900 MHz, Bioelectromagnetics, submitted for publication.
Modulation type pulsed
Duty cycle 12.5 %
Repetition frequency 217 Hz
Exposure setup
Exposure source
Setup During exposure, rats were restrained in rockets made of 5-mm-thick Plexiglas and consisting of a cylinder (6 cm diameter, 15 cm length) and a truncated cone (3 cm length) in which the rat inserted its head. The loop antenna was placed against the cone directly above the rat's head. The four rockets for simultaneous exposure were separated from each other by a double layer of a 12 cm absorbing material to prevent interference from one antenna to another.
Additional info The performances of exposed rats were compared to those of sham-exposed and cage-control rats.
Measurand Value Type Method Mass Remarks
SAR 1 W/kg average over mass measured and calculated brain -
SAR 3.5 W/kg average over mass measured and calculated brain -

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

There were no differences among exposed, sham, and cage-control rats in the two spatial learning tasks.

Study character:

Study funded by

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