Microgravity enhances the relative contribution of visually-induced motion sensation

L. R. Young, M. Shelhamer

Research output: Contribution to journalArticlepeer-review

42 Scopus citations


Visually-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.

Original languageEnglish (US)
Pages (from-to)525-530
Number of pages6
JournalAviation Space and Environmental Medicine
Issue number6
StatePublished - Aug 3 1990
Externally publishedYes

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health


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