PMID: 3753529Jan 1, 1986Paper

Brain temperature measurements in rats: a comparison of microwave and ambient temperature exposures

Bioelectromagnetics
T R WardJ B Kinn

Abstract

In an effort to understand microwave heating better, regional brain and core temperatures of rats exposed to microwave radiation (2450 MHz) or elevated air temperatures were measured in two studies. In general, we have found no substantial evidence for temperature differentials, or "hot spots," in the brain of these animals. In the first study, after a 30-min exposure, no temperature differences between brain regions either after microwave or ambient air exposure were found. However, a highly significant correlation between brain and core temperatures was found and this correlation was the same for both microwave and ambient air heating. In the second study, time-temperature profiles were measured in rats exposed to either 30 mW/cm2 or 36.2 degrees C. In this study, the 30-min exposure period was divided into seven intervals and the change in temperature during each period was analyzed. Only the cortex showed significantly different heating rates between the air heating and microwave heating; however, this difference disappeared after the initial 5 min of exposure.

References

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Citations

Jan 17, 2002·Bioelectromagnetics·P GajsekP A Mason
Dec 14, 1999·Journal of Neuroscience Methods·A M BrambrinkO Kempski
Dec 11, 2007·Canadian Journal of Physiology and Pharmacology·Darren L ClarkFrederick Colbourne
Jan 1, 1997·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·G A MickleyS T Farrell
Jun 17, 2010·Brain Research Reviews·Rianne Stam
May 1, 1990·Stroke; a Journal of Cerebral Circulation·H MinamisawaB K Siesjö
Jan 1, 1988·Annals of the New York Academy of Sciences·G P Smith, L H Schneider

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