Artificial gravity : adaptation of the vestibulo-ocular reflex to head movements during short-radius centrifugation
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2000.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2005
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| Online Access: | http://theses.mit.edu/Dienst/UI/2.0/Describe/0018.mit.theses%2f2000-68 http://hdl.handle.net/1721.1/9237 |
| _version_ | 1826197195166056448 |
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| author | Sienko, Kathleen Helen, 1976- |
| author2 | Laurence R. Young. |
| author_facet | Laurence R. Young. Sienko, Kathleen Helen, 1976- |
| author_sort | Sienko, Kathleen Helen, 1976- |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2000. |
| first_indexed | 2024-09-23T10:43:57Z |
| format | Thesis |
| id | mit-1721.1/9237 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T10:43:57Z |
| publishDate | 2005 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/92372019-04-12T20:55:29Z Artificial gravity : adaptation of the vestibulo-ocular reflex to head movements during short-radius centrifugation Adaptation of the vestibulo-ocular reflex to head movements during short-radius centrifugation Sienko, Kathleen Helen, 1976- Laurence 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, 2000. Also available online at the MIT Theses Online homepage <http://thesis.mit.edu>. Includes bibliographical references (p. 89-93). Short-radius centrifugation is currently being pursued as a potential countermeasure to long duration space flight. Short-radius centrifugation requires relatively high angular velocities (on the order of 30 rpm) to create centripetal accelerations on the order of 1 g. Unfortunately, out-of-plane head movements during centrifugation induce inappropriate vestibulo-ocular reflexes, debilitating motion sickness symptoms, and illusory tilt sensations due to conflicting visual and vestibular signals. Practical use of an intermittent short-radius centrifuge as a countermeasure requires that crew members be capable of rapidly adapting to the unexpected semicircular canal inputs with minimal side- or post-effects. Furthermore, adaptation not only has to be achieved, it also has to be appropriate for the environment (stationary, rotating, 1 g, or 0 g). The purpose of this research was to investigate humans' ability to attain and maintain adaptation to rotating environments. Subjects participated in a series of pre-/per-/and post-rotation data collection sessions consisting of both eye reflex recordings during head movements, a subjective battery of tests, and autonomic measurements. Eight subjects were tested on three days (D=1, 2, 8). Eye movements were measured in response to out-of-plane head movements during rotation at 23 rpm on-board the MIT short-radius centrifuge (r=2 m). Slow phase eye velocity (SPV) was reconstructed from filtered and de-saccaded eye movement data. The significant main effect of day and pre-/post-adaptation phase demonstrated that normalized SPV decreased following adaptation in the light. by Kathleen Helen Sienko. S.M. 2005-08-22T23:44:18Z 2005-08-22T23:44:18Z 2000 2000 Thesis http://theses.mit.edu/Dienst/UI/2.0/Describe/0018.mit.theses%2f2000-68 http://hdl.handle.net/1721.1/9237 45503876 eng 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://theses.mit.edu/Dienst/UI/2.0/Describe/0018.mit.theses%2f2000-68 http://dspace.mit.edu/handle/1721.1/7582 172 p. 17340788 bytes 17340542 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Aeronautics and Astronautics. Sienko, Kathleen Helen, 1976- Artificial gravity : adaptation of the vestibulo-ocular reflex to head movements during short-radius centrifugation |
| title | Artificial gravity : adaptation of the vestibulo-ocular reflex to head movements during short-radius centrifugation |
| title_full | Artificial gravity : adaptation of the vestibulo-ocular reflex to head movements during short-radius centrifugation |
| title_fullStr | Artificial gravity : adaptation of the vestibulo-ocular reflex to head movements during short-radius centrifugation |
| title_full_unstemmed | Artificial gravity : adaptation of the vestibulo-ocular reflex to head movements during short-radius centrifugation |
| title_short | Artificial gravity : adaptation of the vestibulo-ocular reflex to head movements during short-radius centrifugation |
| title_sort | artificial gravity adaptation of the vestibulo ocular reflex to head movements during short radius centrifugation |
| topic | Aeronautics and Astronautics. |
| url | http://theses.mit.edu/Dienst/UI/2.0/Describe/0018.mit.theses%2f2000-68 http://hdl.handle.net/1721.1/9237 |
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