Artificial gravity : neurovestibular adaptation to incremental exposure to centrifugation
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2004.
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| Format: | Thesis |
| Language: | en_US |
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Massachusetts Institute of Technology
2005
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| Online Access: | http://hdl.handle.net/1721.1/26749 |
| _version_ | 1811002572401541120 |
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| author | Bruni, Sylvain, 1981- |
| author2 | Lawrence R. Young. |
| author_facet | Lawrence R. Young. Bruni, Sylvain, 1981- |
| author_sort | Bruni, Sylvain, 1981- |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2004. |
| first_indexed | 2024-09-23T15:50:40Z |
| format | Thesis |
| id | mit-1721.1/26749 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:50:40Z |
| publishDate | 2005 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/267492019-04-12T21:44:04Z Artificial gravity : neurovestibular adaptation to incremental exposure to centrifugation Neurovestibular adaptation to incremental exposure to centrifugation Bruni, Sylvain, 1981- Lawrence R. Young. Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Aeronautics and Astronautics. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2004. This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. Includes bibliographical references (p. 115-122). (cont.) not build up adaptation, all subjects in the experimental group who completed the protocol showed signs of adaptation to the stimulus. Only one subject did not complete the five sessions, setting the drop-out rate at about 14%. If this conclusion holds true with more subjects, then a better protocol of adaptation has been unveiled. In order to counteract the debilitating effects of the space environment on the human body, short-radius intermittent centrifugation is investigated as a possible means to expose astronauts to artificial gravity. Whereas AG is efficient in providing stimuli for muscles, bones and cardiovascular system, short-radius centrifugation elicits discomfort and illusory sensations of motion if particular head movements are made while spinning. Past research has shown that human beings can adapt to these sensations and undergo various stimuli without the disturbing effects of motion sickness, sensations of tumbling and inappropriate eye movements. However, current protocols for adaptation basically consist in repeated exposure to the discomfort. This solution is not satisfactory because the drop-out rate oscillates between 30 and 50%. Since it is not acceptable to spend days of training on astronauts who, in the end, because of this training, could become unsuitable for flight, it is of primary importance to find a training protocol that achieves adaptation without going through permanent discomfort. Incremental exposure to centrifugation is expected to be a compromised protocol to bring trainees to adaptive level without exposing them to maximum discomfort. Seven subjects were exposed to centrifugation during a five-day protocol, over which the speed of rotation was progressively increased. As in previous protocols of adaptation, subjects performed provocative head movements at all speeds. A control experiment had ten subjects exposed to centrifugation without making head turns, in order to verify to what extent the experimental conditions of measurement impact the subjects' behavior and reactions. While subjects in the control experiment did by Sylvain Bruni. S.M. 2005-09-06T19:57:20Z 2005-09-06T19:57:20Z 2004 2004 Thesis http://hdl.handle.net/1721.1/26749 60458691 en_US M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 172 p. 2102406 bytes 2174371 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Aeronautics and Astronautics. Bruni, Sylvain, 1981- Artificial gravity : neurovestibular adaptation to incremental exposure to centrifugation |
| title | Artificial gravity : neurovestibular adaptation to incremental exposure to centrifugation |
| title_full | Artificial gravity : neurovestibular adaptation to incremental exposure to centrifugation |
| title_fullStr | Artificial gravity : neurovestibular adaptation to incremental exposure to centrifugation |
| title_full_unstemmed | Artificial gravity : neurovestibular adaptation to incremental exposure to centrifugation |
| title_short | Artificial gravity : neurovestibular adaptation to incremental exposure to centrifugation |
| title_sort | artificial gravity neurovestibular adaptation to incremental exposure to centrifugation |
| topic | Aeronautics and Astronautics. |
| url | http://hdl.handle.net/1721.1/26749 |
| work_keys_str_mv | AT brunisylvain1981 artificialgravityneurovestibularadaptationtoincrementalexposuretocentrifugation AT brunisylvain1981 neurovestibularadaptationtoincrementalexposuretocentrifugation |