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Selection of artificial gravity by animals during suborbital rocket flightsWhite rats selected preferred artificial gravity levels by locomotion in centrifuges consisting of two runways mounted in the nose of sounding rockets. Roll rate of the Aerobee 150A rocket was designed to produce an angular velocity of 45 rpm during 5 min of free-fall, providing a gravity range from 0.3 to 1.5 G depending on a subject's runway position. One animal was released at the high and one at the low gravity position in each flight. Animal positions were continuously recorded. Locomotion patterns during these flights were similar. All four animals explored the entire available G-range. One rat settled at 0.4 G after 2 min; the others crossed the 1-G location in progressively narrower excursions and were near earth gravity at the end of the test period. Tentatively, the data suggest that normal earth-reared rats select earth gravity when available magnitudes include values above and below 1 G. Modification of gravity preference by prolonged exposure to higher or lower levels remains a possibility.
Document ID
19750050312
Document Type
Reprint (Version printed in journal)
Authors
Lange, K. O.
Belleville, R. E. (National Institute on Drug Abuse Rockville, Md., United States)
Clark, F. C. (Mississippi, University University, Miss., United States)
Date Acquired
August 8, 2013
Publication Date
June 1, 1975
Subject Category
LIFE SCIENCES (GENERAL)
Funding Number(s)
CONTRACT_GRANT: NGL-18-001-003
CONTRACT_GRANT: NGR-34-003-041
Distribution Limits
Public
Copyright
Other