EurekaMag
+ Translate
+ Most Popular
Advantages and disadvantages of bordeaux mixture and of lime-sulphur used on apples in the growing season
Observations on the Umaria marine bed
10 years of hearing conservation in the Royal Air Force
Chocolate crumb - dairy ingredient for milk chocolate
Effect of daily gelatin ingestion on human scalp hair
Comparison of rice bran and maize bran as feeds for growing and fattening pigs
The composition of pampas-grass (Cortaderia argentea.)
The Accraian Series:
The mechanism of the Liebermann-Burchard reaction of sterols and triterpenes and their esters
Cerebrovascular Doppler ultrasound studies (cv-Doppler)
Toria: PT-303 - first national variety
Hair growth promoting activity of tridax procumbens
Productivity of Pekin x Khaki Campbell ducks
A stable cytosolic expression of VH antibody fragment directed against PVY NIa protein in transgenic potato plant confers partial protection against the virus
Solar treatment of wheat loose smut
Swimmers itch in the Lake of Garda
Bactofugation and the Bactotherm process
The effects of prefrontal lobotomy on aggressive behavior in dogs
Visual rating scales for screening whorl-stage corn for resistance to fall armyworm
Breakdown of seamounts at the trench axis, viewed from gravity anomaly
Kooken; pennsylvania's toughest cave
Recovery of new dinosaur and other fossils from the Early Cretaceous Arundel Clay facies (Potomac Group) of central Maryland, U.S.A
Zubor horny (Bison bonasus) v prirodnych podmienkach Slovensku
The extended Widal test in the diagnosis of fevers due to Salmonella infection
Hair of the american mastodon indicates an adaptation to a semi aquatic habitat

Selective regulation of brain and body temperatures in the squirrel monkey


Selective regulation of brain and body temperatures in the squirrel monkey



American Journal of Physiology 245(2): R293-R297



ISSN/ISBN: 0002-9513

PMID: 6881387

DOI: 10.1152/ajpregu.1983.245.2.r293

Many panting mammals can cool the brain below body core temperature during heat stress. Studies on human subjects suggest that primates may also be able selectively to regulate brain temperature. We examined this possibility by measuring hypothalamic (Thy) and colonic (Tco) temperatures of unanesthetized squirrel monkeys (Saimiri sciureus) in two different experiments. First, Thy and Tco were examined at four different ambient temperatures (Ta) between 20 and 36 degrees C. Over this range of Ta, Thy was regulated within a narrower range than Tco. In the cold Ta, Tco was lower than Thy; whereas in warm Ta, Tco was higher than Thy. Second, monkeys maintained at 35 degrees C Ta were acutely exposed to cool air blown on the face or abdomen. Air directed at the face cooled Thy more and faster than Tco, whereas air directed at the abdomen cooled Tco and Thy at the same rate. The second experiment was repeated in anesthetized animals with a thermocouple in the right atrium, and the results showed that this brain cooling was not produced by cooling of blood in the body core. These data demonstrate that the squirrel monkey is capable of selectively regulating Thy. Further the results suggest that venous blood returning from the face may be involved in selective brain cooling in warm environments.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 018110467

Download citation: RISBibTeXText

Related references

Differential regulation of brain and body temperature in the squirrel monkey saimiri sciureus. Federation Proceedings 41(5): ABSTRACT 8335, 1982

Behavioral thermo regulation in the squirrel monkey is a function of skin preoptic and core temperatures. Federation Proceedings 34(3): 455, 1975

Circadian brain and body temperature rhythms in the squirrel monkey. American Journal of Physiology 246(2 Pt 2): R242-R246, 1984

The effect of progesterone on body temperature in the japanese monkey and squirrel monkey. Federation Proceedings 34(3): 455, 1975

Coexistence of squirrel monkey retrovirus and herpesvirus saimiri in a squirrel monkey throat swab culture. Abstracts of the Annual Meeting of the American Society for Microbiology 78 : 276, 1978

Brain irradiation: effects on regional MAO and COMT activity in the brain of the squirrel monkey and on the incorporation of [14C]tyrosine into catecholamines. Journal of Toxicology and Environmental Health 14(5-6): 749-758, 1984

Thermo regulation in the squirrel monkey. Physiologist 13(3): 316, 1970

Neuronal models of the body in the squirrel monkey thalamus. Anatomical Record 199(3): 22A, 1981

Direction selective cells in the nucleus of the optic tract in the squirrel monkey. Society for Neuroscience Abstracts 11(2): 1009, 1985

Behavioral pharmacology of the selective dopamine uptake inhibitor RTI-113, in the squirrel monkey. Society for Neuroscience Abstracts 24(1-2): 1484, 1998

Locomotor body equilibrium after diazepam injection in the squirrel monkey. Orl; Journal for Oto-Rhino-Laryngology and its Related Specialties 36(1): 33-36, 1974

Effects of diazepam on body temperature of the aged squirrel monkey. Brain Research Bulletin 7(1): 5-9, 1981

Developmental body of composition of the squirrel monkey (Saimiri sciureus). Growth 44(4): 271-286, 1980

Surface area of the squirrel monkey in relation to body weight. Journal of Applied Physiology 31(1): 140-141, 1971

Selective neurotoxic damage in the squirrel monkey to the parvocellular retino geniculate pathway. Society for Neuroscience Abstracts 14(2): 1120, 1988