Study type: Medical/biological study (experimental study)

Whole-body exposure to 2.45 GHz electromagnetic fields does not alter 12-arm radial-maze with reduced access to spatial cues in rats med./bio.

Published in: Behav Brain Res 2005; 161 (2): 331-334

Aim of study (acc. to author)

Lai et al. (see publication 109) reported that irradiation of rats to pulsed 2.45 GHz microwaves altered maze performance (the maze was bordered by 20 cm high opaque walls). Using a maze test based on unrestrained access to spatial cues (no walls), the authors could not replicate this result [see publication 10830).
In the present study, the authors attempted another replication using a maze apparatus bordered by 30 cm high opaque walls (furthermore, the rats were not injected before exposure).



Exposure Parameters
Exposure 1: 2.45 GHz
Modulation type: pulsed
Exposure duration: continuous for 45 min

Exposure 1

Main characteristics
Frequency 2.45 GHz
  • guided field
Exposure duration continuous for 45 min
Modulation type pulsed
Pulse width 2 µs
Repetition frequency 500 Hz
Exposure setup
Exposure source
Chamber Exposure area: 280 cm x 360 cm
Setup Rats were exposed individually in their cages (42 cm x 26 cm x 15 cm) which were placed in the waveguide
Sham exposure A sham exposure was conducted.
Measurand Value Type Method Mass Remarks
SAR 600 µW/g mean measured and calculated whole body -

Reference articles

  • Cassel JC et al. (2004): Whole-body exposure to 2.45 GHz electromagnetic fields does not alter radial-maze performance in rats

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

Performance of irradiated rats was normal. These data show that microwave exposure as used herein does not alter spatial working memory, when access to spatial cues is reduced.

Study character:

Study funded by

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