Accession Number : ADP002088

Title :   Sensory Dynamics of Intense Microwave Irradiation: A Comparative Study of Aversive Behaviors by Mice and Rats,

Corporate Author : VETERANS ADMINISTRATION MEDICAL CENTER KANSAS CITY MO NEUROPSYCHOLOGY AND RADIOLOGY LABS

Personal Author(s) : Justesen,D. R.

Report Date : OCT 1981

Pagination or Media Count : 28

Abstract : The results of two experiments are reported, the first on 24 mice and 14 rats, all experimentally naive, that were observed for evidence of adventitious escape from faradic shock or from a potentially lethal, 2450-MHz microwave field in a multi-mode cavity. All of ten rats irradiated at a whole-body-averaged dose rate of 60 mW/g convulsed and expired, presumably from radiation-induced hyperpyrexia. Eight of ten mice irradiated at 60 mW/g survived the four sessions of irradiation, but reliable evidence of escape learning was not observed. The data of the second experiment, which was a pilot study of four rats with an extensive history of exposure to intense but intermittently applied microwave fields, revealed that the animals learned to thermoregulate behaviorally by locomoting in and out of the safe-area circle. A strong relation between dose rate (30, 60, and 120 mW/g) and proportion of time spent in the safe area was observed (r = .97). Post-exposure means of colonic temperature during three sets of sessions under the different rates of energy dosing were highly stable and averaged 39.6 deg C.

Descriptors :   *Microwaves, *Radiation effects, Symposia, Irradiation, Physiological effects, Temperature control, Motivation, Learning, Rats, Mice

Distribution Statement : APPROVED FOR PUBLIC RELEASE