Study type: Medical/biological study (experimental study)

Studies of the teratogenic potential of exposure of rats to 6000 MHz microwave radiation. II. Postnatal psychophysiologic evaluations med./bio.

Published in: Radiat Res 1984; 97 (2): 282-301

Aim of study (acc. to author)

To study if protracted prenatal exposure to microwave irradiation at a frequency of 6000 MHz and at a power density level of 35 mW/cm² would result in significant changes in postnatal psychophysiologic growth and development.
Litters were culled to F1 a offspring. Mothers were rebred 10 days after weaning. Further investigations were completed on F1 b offspring.



Exposure Parameters
Exposure 1: 6 GHz
Exposure duration: continuous for 21 days during Gestation

Exposure 1

Main characteristics
Frequency 6 GHz
Exposure duration continuous for 21 days during Gestation
Additional info Details of exposure and dosimetry have been described in the first part by Jensh et al. 1984
Exposure setup
Exposure source
Chamber anechoic chamber with double metal-clad plywood/ 648 ft?, acrolite animal cages
Additional info Animals were divided into 11 groups (not more than 4 animals per group). 6 groups served as control and 5 were exposed to microwave radition.
Measurand Value Type Method Mass Remarks
power density 350 W/m² unspecified unspecified - -

Reference articles

  • Jensh RP (1984): Studies of the teratogenic potential of exposure of rats to 6000 MHz microwave radiation. I. Morphologic analysis at term

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

Sex differences within groups were found in four behavioral tests and in blood data. Exposed females exhibited decreased learning ability in the water T maze test but the males were unaffected. Exposed females exhibited decreased activity levels, and males showed increased activity levels, in the open field test.
Significant differences between groups were revealed for: F1 b term fetal weight; F1 a eye opening, postnatal growth to the fifth week, water T-maze and open field test results; and several organ/body weight ratios.
These findings indicate that exposure to 6000 MHz irradiation at this power density level may result in subtle long-term neurophysiologic alterations in the absence of morphologic alterations.

Study character:

Study funded by

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