Study type: Medical/biological study (experimental study)

In utero exposure to microwave radiation and rat brain development. med./bio.

Published in: Bioelectromagnetics 1984; 5 (3): 315-322

Aim of study (acc. to author)

To investigate effects of exposure to low-level microwave radiation, applied during a large fraction of the gestational period, on certain measures of mammalian-brain development.



Exposure Parameters
Exposure 1: 2.45 GHz
Modulation type: pulsed
Exposure duration: repeated daily exposure, 24 h/day for 16 days
  • SAR: 400 µW/g unspecified (unspecified) (2 mW/cm² corresponding estimated power density.)

Exposure 1

Main characteristics
Frequency 2.45 GHz
  • guided field
Exposure duration repeated daily exposure, 24 h/day for 16 days
Additional info Circularly polarized.
Modulation type pulsed
Pulse width 8 µs
Packets per second 1
Repetition frequency 830 Hz
Exposure setup
Exposure source
  • waveguide system consisting of 10 powered (used for exposure) and 10 unpowered (used for sham exposu
Setup Plexiglas cage 20 cm x 17.5 cm in diameter located at the center of the waveguide
Measurand Value Type Method Mass Remarks
SAR 400 µW/g unspecified determined by power loss unspecified 2 mW/cm² corresponding estimated power density.

Reference articles

  • Guy AW et al. (1979): Circularly polarized 2450 MHz waveguide system for chronic exposure of small animals to microwaves.

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • after exposure

Main outcome of study (acc. to author)

The values for measured parameters of the exposed fetuses did not differ significantly from those of sham-exposed fetuses. It is concluded that radiofrequency radiation at an SAR of 0.4 W/kg does not have effects on brain organogenesis in the rats.

Study character:

Study funded by

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