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Space Adaptation Syndrome Experiments (SASE)
Principal Investigator
Research Area:
Species Studied
Scientific Name: Homo sapiens Species: Human

Many astronauts experience space adaptation syndrome, which may include illusions, loss of knowledge of limb position, nausea and vomiting. These symptoms may occur because of conflicting messages about body position and movement which the brain receives from the eyes, the balance organs of the inner ear and gravity sensing receptors in the muscles, tendons, and joints.

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Watt D and Lefebvre L. Vestibular suppression during space flight. Journal of Vestibular Research. 2003;13(4-6):363-76. []

Young LR, Oman CM, Merfeld D, Watt D, Roy S, DeLuca C, Balkwill D, Christie J, Groleau N, Jackson DK, et al. Spatial orientation and posture during and following weightlessness: human experiments on Spacelab Life Sciences 1. Journal of Vestibular Research. 1993. Fall; 3(3):231-9. []

Adaptation, physiological
Eye movements
Fixation, ocular
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Data Information
Data Availability
Archive is complete. No data sets are available for this experiment. Please Contact LSDA if you know of available data for this investigation.

Eye movements
Head pitching
Motion sickness
Oculomotor reactions
Postrotatory nystagmus
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Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
STS-42 01/22/1992 01/30/1992 8 days

Additional Information
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Johnson Space Center LSDA Office
Project Manager: Jessica Keune
Institutional Support
Canadian Space Agency (CSA)
Proposal Date