PMID: 7085406Apr 1, 1982Paper

Adjustments in metabolic heat production by squirrel monkeys exposed to microwaves

Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology
E R Adair, B W Adams


Squirrel monkeys (Saimiri sciureus) were exposed in the far field of a horn antenna to both brief (10-min) and prolonged (90-min) periods of 2,450-MHz continuous microwaves. Ambient temperature (Ta) was constant at 15, 20, or 25 degrees C. Microwave power density ranged from 2.5 to 10 mW/cm2, representing a range of whole-body energy absorption from 0.4 to 1.5 W/kg. Reliable reductions in metabolic heat production (M), calculated from oxygen deficit in the monkey's expired air, were initiated at all Ta by 10-min whole-body exposures to power densities of 4 mW/cm2 (2 monkeys) or 6 mW/cm2 (1 monkey) and above. The magnitude of M reduction was linearly related to microwave intensity above the threshold level. Termination of microwaves was followed by a rapid M rebound. The change in M produced by a given power density was nearly the same in Ta = 15 and 20 degrees C. During 90-min exposures at Ta = 20 degrees C, the vigorous M reduction to microwave onset adapted slowly, ensuring continual precise regulation of internal body temperature. Thus cold-exposed endotherms readily compensate for microwave-induced body heating by reducing endogenous heat production.


Sep 1, 1986·International Journal of Radiation Biology and Related Studies in Physics, Chemistry, and Medicine·N J RobertsS T Lu
Jan 1, 1992·Bioelectromagnetics·E R AdairS K Hartman
Nov 25, 2003·Bioelectromagnetics·E R Adair, David R Black

Related Concepts

Heat Loss
Ultrahigh Frequency Waves
Genus Saimiri

Trending Feeds


Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Lipidomics & Rhinovirus Infection

Lipidomics can be used to examine the lipid species involved with pathogenic conditions, such as viral associated inflammation. Discovered the latest research on Lipidomics & Rhinovirus Infection.

Alzheimer's Disease: MS4A

Variants within the membrane-spanning 4-domains subfamily A (MS4A) gene cluster have recently been implicated in Alzheimer's disease in genome-wide association studies. Here is the latest research on Alzheimer's disease and MS4A.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Torsion Dystonia

Torsion dystonia is a movement disorder characterized by loss of control of voluntary movements appearing as sustained muscle contractions and/or abnormal postures. Here is the latest research.

Generating Insulin-Secreting Cells

Reprogramming cells or using induced pluripotent stem cells to generate insulin-secreting cells has significant therapeutic implications for diabetics. Here is the latest research on generation of insulin-secreting cells.

Central Pontine Myelinolysis

Central Pontine Myelinolysis is a neurologic disorder caused most frequently by rapid correction of hyponatremia and is characterized by demyelination that affects the central portion of the base of the pons. Here is the latest research on this disease.

Epigenome Editing

Epigenome editing is the directed modification of epigenetic marks on chromatin at specified loci. This tool has many applications in research as well as in the clinic. Find the latest research on epigenome editing here.