Abstract：
:Space motion sickness (SMS) and spatial orientation and motion perception disturbances occur in 70-80% of astronauts. People select "rest frames" to create the subjective sense of spatial orientation. In microgravity, the astronaut's rest frame may be based on visual scene polarity cues and on the internal head and body z axis (vertical body axis). The data reported here address the following question: Can an astronaut's orientation rest frame be related and described by other variables including circular vection response latencies and space motion sickness? The astronaut's microgravity spatial orientation rest frames were determined from inflight and postflight verbal reports. Circular vection responses were elicited by rotating a virtual room continuously at 35 degrees/s in pitch, roll and yaw with respect to the astronaut. Latency to the onset of vection was recorded from the time the crew member opened their eyes to the onset of vection. The astronauts who used visual cues exhibited significantly shorter vection latencies than those who used internal z axis cues. A negative binomial regression model was used to represent the observed total SMS symptom scores for each subject for each flight day. Orientation reference type had a significant effect, resulting in an estimated three-fold increase in the expected motion sickness score on flight day 1 for astronauts who used visual cues. The results demonstrate meaningful classification of astronauts' rest frames and their relationships to sensitivity to circular vection and SMS. Thus, it may be possible to use vection latencies to predict SMS severity and duration.
journal_name
Brain Res Bulljournal_title
Brain research bulletinauthors
Harm DL,Parker DE,Reschke MF,Skinner NCdoi
10.1016/s0361-9230(98)00096-3keywords:
subject
Has Abstractpub_date
1998-11-15 00:00:00pages
497-501issue
5eissn
0361-9230issn
1873-2747pii
S0361-9230(98)00096-3journal_volume
47pub_type
临床试验,杂志文章abstract：:Previous studies have shown that large hippocampal lesions increase the gastric pathology found in restrained and unrestrained animals. The present experiments investigated the effects of lesions in the two major afferent and efferent pathways of the hippocampus, i.e., the dorsal pathway through the fimbria-fornix and...
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更新日期：2004-03-15 00:00:00
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更新日期：2002-07-01 00:00:00
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pub_type： 杂志文章
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更新日期：2001-03-01 00:00:00
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pub_type： 杂志文章
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更新日期：2012-02-10 00:00:00
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更新日期：1983-11-01 00:00:00
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更新日期：2008-01-31 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
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更新日期：1981-08-01 00:00:00
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更新日期：2005-11-15 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
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journal_title：Brain research bulletin
pub_type： 杂志文章,评审
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journal_title：Brain research bulletin
pub_type： 杂志文章
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更新日期：1987-10-01 00:00:00
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pub_type： 杂志文章
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更新日期：2019-03-01 00:00:00
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journal_title：Brain research bulletin
pub_type： 杂志文章
doi：10.1016/0361-9230(81)90102-7
更新日期：1981-07-01 00:00:00
