Document Detail


Distance and Size Perception in Astronauts during Long-Duration Spaceflight.
MedLine Citation:
PMID:  25369884     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Exposure to microgravity during spaceflight is known to elicit orientation illusions, errors in sensory localization, postural imbalance, changes in vestibulo-spinal and vestibulo-ocular reflexes, and space motion sickness. The objective of this experiment was to investigate whether an alteration in cognitive visual-spatial processing, such as the perception of distance and size of objects, is also taking place during prolonged exposure to microgravity. Our results show that astronauts on board the International Space Station exhibit biases in the perception of their environment. Objects' heights and depths were perceived as taller and shallower, respectively, and distances were generally underestimated in orbit compared to Earth. These changes may occur because the perspective cues for depth are less salient in microgravity or the eye-height scaling of size is different when an observer is not standing on the ground. This finding has operational implications for human space exploration missions.
Authors:
Gilles Clément; Anna Skinner; Corinna Lathan
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Publication Detail:
Type:  Journal Article     Date:  2013-12-13
Journal Detail:
Title:  Life (Basel, Switzerland)     Volume:  3     ISSN:  2075-1729     ISO Abbreviation:  Life (Basel)     Publication Date:  2013  
Date Detail:
Created Date:  2014-11-05     Completed Date:  2014-11-05     Revised Date:  2014-11-08    
Medline Journal Info:
Nlm Unique ID:  101580444     Medline TA:  Life (Basel)     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  524-37     Citation Subset:  -    
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