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Effects of continuous exposure to high gravity on gravity preference in rats.Rats were chronically centrifuged in excess of 2.0 g for 6 or 12 mo. They were given four 24-hr gravity-preference tests in a spiral centrifuge in which they could adjust the gravity level imposed by locomoting inward or outward radially along a track. Chronically centrifuged rats (Group CC) spent as much time at 2.0 g as at 1.0 g while normally raised controls (Group NC) selecdonly 1.0 g. Group CC initially selected 2.0 g and a preference for 1.0 g developed over the four test sessions. These results suggest that hypergravity is not necessarily an aversive stimulus and that gravity preference may depend initially upon the reference level involved. The ultimate selection of 1.0 g by chronically centrifuged animals suggests that a preference for a familiar gravity environment is replaced by a preference for low-gravity stimuli.
Document ID
19720037121
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mccoy, D. F.
Jankovich, J. P.
(Kentucky, University Lexington, Ky., United States)
Date Acquired
August 6, 2013
Publication Date
February 1, 1972
Publication Information
Publication: Journal of Comparative and Physiological Psychology
Volume: 78
Subject Category
Biotechnology
Accession Number
72A20787
Funding Number(s)
CONTRACT_GRANT: NGR-18-001-003
CONTRACT_GRANT: NGR-18-001-046
Distribution Limits
Public
Copyright
Other

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