skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Metabolic and vasomotor responses of rhesus monkeys exposed to 225-MHz radiofrequency energy

Abstract

A previous study showed a substantial increase in the colonic temperature of rhesus monkeys (Macaca mulatta) exposed to radio-frequency (RF) fields at a frequency near whole-body resonance and specific absorption rates (SAR) of 2 to 3 W/kg. The present experiments were conducted to determine the metabolic and vasomotor responses during exposures to similar RF fields. Five adult male rhesus monkeys were exposed to 225-MHz radiation (E orientation) in an anechoic chamber. The monkeys were irradiated at two carefully-controlled ambient temperatures, either cool (20 C) or thermoneutral (26 C). Power densities ranged from 0 (sham) to 10.0 mW/sq cm with an average whole-body SAR of 0.285 (W/kg)/(mW/sq cm). Two experimental protocols were used, each of which began with a 120-min preexposure equilibration period. Then, one protocol involved repetitive 10-min RF exposures at successively higher power densities with a recovery period between exposures. In the second protocol, a 120-min RF exposure permitted the measurement of steady-state thermoregulatory responses. Metabolic and vasomotor adjustments in the rhesus monkey exposed to 225 MHz occurred during brief or sustained exposures at SARs at or above 1.4 W/kg. Metabolic and vasomotor responses were coordinated effectively to produce a stable deep-body temperature. The results show that the thermoregulatorymore » response of the rhesus monkey to an RF exposure at a resonant frequency limits storage of heat in the body. However, substantial increases in colonic temperature were not prevented by such responses, even in a cool environment.« less

Authors:
;
Publication Date:
Research Org.:
Naval Aerospace Medical Research Lab., Pensacola, FL (USA)
OSTI Identifier:
6326037
Report Number(s):
AD-A-180107/5/XAB; NAMRL-OL-87-2
Resource Type:
Technical Report
Resource Relation:
Other Information: Pub. in Bioelectromagnetics, Vol. 8, 73-89(1987)
Country of Publication:
United States
Language:
English
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; METABOLISM; BIOLOGICAL RADIATION EFFECTS; VASODILATION; ABSORPTION; ADULTS; BODY TEMPERATURE; COOLING; DENSITY; MALES; MONKEYS; SHORT WAVE RADIATION; STABILITY; TEMPERATURE CONTROL; AGE GROUPS; ANIMALS; BIOLOGICAL EFFECTS; CONTROL; ELECTROMAGNETIC RADIATION; MAMMALS; PHYSICAL PROPERTIES; PRIMATES; RADIATION EFFECTS; RADIATIONS; RADIOWAVE RADIATION; VERTEBRATES; 560400* - Other Environmental Pollutant Effects

Citation Formats

Lotz, W G, and Saxton, J L. Metabolic and vasomotor responses of rhesus monkeys exposed to 225-MHz radiofrequency energy. United States: N. p., 1987. Web.
Lotz, W G, & Saxton, J L. Metabolic and vasomotor responses of rhesus monkeys exposed to 225-MHz radiofrequency energy. United States.
Lotz, W G, and Saxton, J L. Thu . "Metabolic and vasomotor responses of rhesus monkeys exposed to 225-MHz radiofrequency energy". United States.
@article{osti_6326037,
title = {Metabolic and vasomotor responses of rhesus monkeys exposed to 225-MHz radiofrequency energy},
author = {Lotz, W G and Saxton, J L},
abstractNote = {A previous study showed a substantial increase in the colonic temperature of rhesus monkeys (Macaca mulatta) exposed to radio-frequency (RF) fields at a frequency near whole-body resonance and specific absorption rates (SAR) of 2 to 3 W/kg. The present experiments were conducted to determine the metabolic and vasomotor responses during exposures to similar RF fields. Five adult male rhesus monkeys were exposed to 225-MHz radiation (E orientation) in an anechoic chamber. The monkeys were irradiated at two carefully-controlled ambient temperatures, either cool (20 C) or thermoneutral (26 C). Power densities ranged from 0 (sham) to 10.0 mW/sq cm with an average whole-body SAR of 0.285 (W/kg)/(mW/sq cm). Two experimental protocols were used, each of which began with a 120-min preexposure equilibration period. Then, one protocol involved repetitive 10-min RF exposures at successively higher power densities with a recovery period between exposures. In the second protocol, a 120-min RF exposure permitted the measurement of steady-state thermoregulatory responses. Metabolic and vasomotor adjustments in the rhesus monkey exposed to 225 MHz occurred during brief or sustained exposures at SARs at or above 1.4 W/kg. Metabolic and vasomotor responses were coordinated effectively to produce a stable deep-body temperature. The results show that the thermoregulatory response of the rhesus monkey to an RF exposure at a resonant frequency limits storage of heat in the body. However, substantial increases in colonic temperature were not prevented by such responses, even in a cool environment.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Technical Report:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that may hold this item. Keep in mind that many technical reports are not cataloged in WorldCat.

Save / Share: