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Torsional vestibulo-ocular reflex measurements for identifying otolith asymmetries possibly related to space motion sickness susceptibilityRecent studies by Diamond and Markham have identified significant correlations between space motion sickness susceptibility and measures of disconjugate torsional eye movements recorded during parabolic flights. These results support an earlier proposal by von Baumgarten and Thumler which hypothesized that an asymmetry of otolith function between the two ears is the cause of space motion sickness. It may be possible to devise experiments that can be performed in the 1 g environment on earth that could identify and quantify the presence of asymmetric otolith function. This paper summarizes the known physiological and anatomical properties of the otolith organs and the properties of the torsional vestibulo-ocular reflex which are relevant to the design of a stimulus to identify otolith asymmetries. A specific stimulus which takes advantage of these properties is proposed.
Document ID
20040089683
Acquisition Source
Johnson Space Center
Document Type
Reprint (Version printed in journal)
Authors
Peterka, R. J.
(Good Samaritan Hospital & Medical Center, Clinical Vestibular Laboratory Portland, OR 97210, United States)
Date Acquired
August 21, 2013
Publication Date
July 1, 1994
Publication Information
Publication: Acta astronautica
Volume: 33
ISSN: 0094-5765
Subject Category
Aerospace Medicine
Funding Number(s)
CONTRACT_GRANT: NAG9-117
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Neuroscience
NASA Discipline Number 16-10
NASA Program Space Physiology and Countermeasures

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