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Experiment K-7-35: Circadian Rhythms and Temperature Regulation During SpaceflightMammals have developed the ability to adapt to most variations encountered in their everyday environment. For example, homeotherms have developed the ability to maintain the internal cellular environment at a relatively constant temperature. Also, in order to compensate for temporal variations in the terrestrial environment, the circadian timing system has evolved. However, throughout the evolution of life on earth, living organisms have been exposed to the influence of an unvarying level of earth's gravity. As a result changes in gravity produce adaptive responses which are not completely understood. In particular, spaceflight has pronounced effects on various physiological and behavioral systems. Such systems include body temperature regulation and circadian rhythms. This program has examined the influence of microgravity on temperature regulation and circadian timekeeping systems in Rhesus monkeys. Animals flown on the Soviet Biosatellite, COSMOS 2044, were exposed to 14 days of microgravity while constantly monitoring the circadian patterns temperature regulation, heart rate and activity. This experiment has extended our previous observations from COSMOS 1514, as well as providing insights into the physiological mechanisms that produce these changes.
Document ID
19960029011
Acquisition Source
Ames Research Center
Document Type
Other
Authors
Fuller, C. A.
(California Univ. Davis, CA United States)
Alpatov, A. M.
(Institute of Biomedical Problems Moscow, USSR)
Hoban-Higgins, T. M.
(California Univ. Davis, CA United States)
Klimovitsky, V. Y.
(Institute of Biomedical Problems Moscow, USSR)
Date Acquired
August 17, 2013
Publication Date
September 1, 1994
Publication Information
Publication: US Experiments Flown on the Soviet Biosatellite Cosmos 2044
Subject Category
Life Sciences (General)
Accession Number
96N29606
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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