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Neurology of microgravity and space travelExposure to microgravity and space travel produce several neurologic changes, including SAS, ataxia, postural disturbances, perceptual illusions, neuromuscular weakness, and fatigue. Inflight SAS, perceptual illusions, and ocular changes are of more importance. After landing, however, ataxia, perceptual illusions, neuromuscular weakness, and fatigue play greater roles in astronaut health and readaptation to a terrestrial environment. Cardiovascular adjustments to microgravity, bone demineralization, and possible decompression sickness and excessive radiation exposure contribute further to medical problems of astronauts in space. A better understanding of the mechanisms by which microgravity adversely affects the nervous system and more effective treatments will provide healthier, happier, and longer stays in space on the space station Freedom and during the mission to Mars.
Document ID
Document Type
Reprint (Version printed in journal)
Fujii, M. D.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Patten, B. M.
(Wright State Univ.; NASA, Johnson Space Center Houston, TX, United States)
Date Acquired
August 16, 2013
Publication Date
November 1, 1992
Publication Information
Publication: Neurologic Clinics
Volume: 10
Issue: 4
ISSN: 0733-8619
Subject Category
Aerospace Medicine
Accession Number
Distribution Limits

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