Study type: Medical/biological study (experimental study)

Intermittent exposure of rats to 2450 MHz microwaves at 2.5 mW cm2: behavioral and physiological effects. med./bio.

Published in: Bioelectromagnetics 1986; 7 (3): 315-328

Aim of study (acc. to editor)

To study reactivity to electric footshock, blood levels of cholinesterase and sulfhydryl groups, urinary output of 17-ketosteroids, and deficits of performance in the shuttle box during or after chronic microwave exposure of rats.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 2.45 kHz
Modulation type: CW
Exposure duration: 14 wk (7h/d; 7d/wk)

General information

Rats were placed randomly in either a microwave chamber or sham irradiation chamber.

Exposure 1

Main characteristics
Frequency 2.45 kHz
Type
Exposure duration 14 wk (7h/d; 7d/wk)
Modulation
Modulation type CW
Exposure setup
Exposure source
Chamber Chamber/ 3,5 x 3,5 x 2,75 m, Plexiglass cage/ 20 cm x 10 cm x 9.5 cm
Additional info Electric field was parallel to the long axis of the cage and the rat.
Parameters
Measurand Value Type Method Mass Remarks
SAR 700 µW/g average over mass cf. remarks whole body twin well calorimetry
power density 25 W/m² average over mass measured - -

Reference articles

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

Weekly measures of body mass and food intake did not reveal statistically significant effects of microwave exposure. Assessments of threshold for electric-footshock detection revealed a significant difference between microwave and sham-exposed rats. Assessments of cholinesterase and sulfhydryl groups in blood and 17-ketosteroids in urine did not distinguish the two groups of animals. Behavioral measures were made at the end of the 14-week exposure. Statistically significant differences between microwave- and sham-exposed animals were observed for these measures. Examination of adrenal tissue, plasma electrolytes, and organ masses after 14 weeks of irradiation revealed no difference between the two groups of animals.

Study character:

Study funded by

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