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Gravitational biology and the mammalian circadian timing systemUsing published reports, this paper compares and contrasts results on the effects of altered gravitational fields on the regulation in mammals of several physiological and behavioral variables with the circadian regulation of the same variables. The variables considered include the temperature regulation, heart rate, activity, food intake, and calcium balance. It is shown that, in rats, the homeostatic regulation of the body temperature, heart rate, and activity becomes depressed following exposure to a 2 G hyperdynamic field, and recovers within 6 days of 1 G condition. In addition, the circadian rhythms of these variables exhibit a depression of the rhythm amplitude; a recovery of this condition requires a minimum of 7 days.
Document ID
19900028030
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fuller, Charles A.
(California Univ. Davis, CA, United States)
Murakami, Dean M.
(California, University Davis, United States)
Sulzman, Frank M.
(NASA Div. of Life Sciences Washington, DC, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Publication Information
Publication: - Gravitational Biology, Espoo, Finland, July 18-29, 1988) Advances in Space Research
ISSN: 0273-1177
Subject Category
Life Sciences (General)
Accession Number
90A15085
Funding Number(s)
CONTRACT_GRANT: NAS2-12334
CONTRACT_GRANT: NAG2-349
Distribution Limits
Public
Copyright
Other

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