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Perception of linear acceleration in weightlessnessTests of the perception and use of linear acceleration sensory information were performed on the science crews of the Spacelab 1 (SL-1) and D-1 missions using linear 'sleds' in-flight (D-1) and pre-post flight. The time delay between the acceleration step stimulus and the subjective response was consistently reduced during weightlessness, but was neither statistically significant nor of functional importance. Increased variability of responses when going from one environment to the other was apparent from measurements on the first day of the mission and in the first days post-flight. Subjective reports of perceived motion during sinusoidal oscillation in weightlessness were qualitatively similar to reports on earth. In a closed-loop motion nulling task, enhanced performance was observed post-flight in all crewmembers tested in the Y or Z axes.
Document ID
19920056512
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Arrott, Anthony P.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Young, Laurence R.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Merfeld, Daniel M.
(Payload Systems, Inc.; MIT, Cambridge, MA, United States)
Date Acquired
August 15, 2013
Publication Date
February 1, 1991
Publication Information
Publication: Physiologist, Supplement
Volume: 34
Issue: 1 Fe
ISSN: 0031-9376
Subject Category
Behavioral Sciences
Accession Number
92A39136
Funding Number(s)
CONTRACT_GRANT: NASW-3651
CONTRACT_GRANT: NAS9-15343
Distribution Limits
Public
Copyright
Other

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