Thermal and physiologic responses to 1200-MHz radiofrequency radiation: Differences between exposure in E and H orientation
- Air Force School of Aerospace Medicine, Brooks Air Force Base, TX (USA)
Ketamine-anesthetized Sprague-Dawley rats were exposed to far-field 1200-MHz continuous wave radiofrequency radiation in both E and H orientations (long axis of animal parallel to electric or magnetic field, respectively). Power densities were used that resulted in equivalent whole-body specific absorption rates of approximately 8 W/kg in both orientations (20 mW/cm{sup 2} for E and 45 mW/cm{sup 2} for H). Exposure was conducted to repeatedly increase colonic temperature from 38.5 to 39.5{degrees}C in both orientations in the same animal. Irradiation in E orientation resulted in greater colonic, tympanic, left subcutaneous (side toward antenna), and tail heating. The results indicated a more uniform distribution of heat than that which occurred in previous experiments of 2450-MHz irradiation in E and H orientation. A lack of significant differences in blood pressure and heart rate responses between exposures in the two orientations in this study suggest that greater peripheral heating, as was seen in the earlier study of 2450 MHz, is necessary for these differences to occur.
- OSTI ID:
- 6516602
- Journal Information:
- Proceedings of the Society for Experimental Biology and Medicine; (USA), Vol. 194:4; ISSN 0037-9727
- Country of Publication:
- United States
- Language:
- English
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RADIOWAVE RADIATION
BIOLOGICAL EFFECTS
BLOOD PRESSURE
BODY TEMPERATURE
HEART
RATS
RESPIRATION
ANIMALS
BODY
CARDIOVASCULAR SYSTEM
ELECTROMAGNETIC RADIATION
MAMMALS
ORGANS
RADIATIONS
RODENTS
VERTEBRATES
560400* - Other Environmental Pollutant Effects