Journal of Microwave Power and Electromagnetic Energy (JMPEE)
TITLE	Microwave Irradiation and Ambient Temperature Interact to Alter Rat Behavior Following Overnight Exposure [PDF]
AUTHORS	M.I. Gage 1979 14 4 389-398
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Abstract Each of twelve male hooded rats was trained to insert its head into a food cup for food pellets on a random-interval schedule of reinforcement. After performance stabilized, the rats were assorted into 3 groups of 4 animals. Groups were matched for response rates. Animals were exposed in groups of 4 for 15.5 h to CW 2450-MHz microwaves once every 6 nights. Animals of each group were exposed to microwaves at only one power density, either 5, 10, or 15 m W/cm²; they were exposed three times at an ambient temperature of 22°C, then three times at 28°C, and then once more a 22°C. The relative humidity was 50% during all exposures. Rats were sham irradiated (at 0 mW/cm²) the night before each microwave exposure. Behavior was tested daily after termination of microwave irradiation or after sham exposures. None of the exposures to microwaves at 22°C altered rates or durations of responding. Exposures at 28°C reduced response rates and increased response durations in direct relation to the power density. The results are interpreted as the transient debilitation of behavior produced by the interaction of a mild elevation of ambient temperature and microwave irradiation.