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Microgravity enhances the relative contribution of visually-induced motion sensationVisually-induced self-motion sensation and postural reflexes were first explored in microgravity on the Spacelab 1 mission where four subjects demonstrated that visual orientation effects were stronger in microgravity than preflight. Extended testing of two more subjects during the Spacelab D-1 orbital flight confirmed this finding. The development of visual substitution for inappropriate graviceptor information occurs over the first day or two in microgravity. Additional instrumentation to measure postural reactions failed to produce a more reliable indicator of visual effects than subjective orientation. Localized tactile cues applied to the feet changed the qualitative nature of vection and reduced its subjective strength.
Document ID
19900049239
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Young, L. R.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Shelhamer, M.
(MIT Cambridge, MA, United States)
Date Acquired
August 14, 2013
Publication Date
June 1, 1990
Publication Information
Publication: Aviation, Space, and Environmental Medicine
Volume: 61
ISSN: 0095-6562
Subject Category
Aerospace Medicine
Accession Number
90A36294
Funding Number(s)
CONTRACT_GRANT: NAS9-15343
CONTRACT_GRANT: NASW-3651
Distribution Limits
Public
Copyright
Other

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