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Effect of hypergravity on the circadian rhythms of white rats.The effects of artificial gravity on the circadian rhythm of white rats was observed by comparing feeding activity at 1.0 and 1.75 g. The feeding cycle data were obtained by observing the number of feeding switch responses, as well as the amount of food obtained, as a function of time. One of the three subjects clearly established a free-running cycle with a period of 24.742 hr. During a 40-day exposure to the 1.75 g environment, the subjects maintained the same feeding cycle period which was established at 1.0 g. While the results of this study indicate that the activity rhythms of rats are insensitive to gravity levels between 1.0 and 1.75 g, the effects of gravity levels below 1.0 g are yet to be determined.
Document ID
19730031075
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lafferty, J. F.
(Kentucky, University Lexington, Ky., United States)
Date Acquired
August 7, 2013
Publication Date
November 1, 1972
Subject Category
Biosciences
Report/Patent Number
ASME PAPER 72-WA/BHF-14
Meeting Information
Meeting: Winter Annual Meeting of the American Society of Mechanical Engineers
Location: New York, NY
Start Date: November 26, 1972
End Date: November 30, 1972
Sponsors: American Society of Mechanical Engineers
Accession Number
73A15877
Funding Number(s)
CONTRACT_GRANT: NGR-18-001-008
Distribution Limits
Public
Copyright
Other

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