Document Detail

Color discrimination under chronic hypoxic conditions (simulated climb "Everest-Comex 97").
MedLine Citation:
PMID:  10769896     Owner:  NLM     Status:  MEDLINE    
Hypoxia is known to alter visual functions. In the present study, the effects of chronic hypobaric hypoxia upon visual color discrimination were studied in 8 subjects participating in a simulated climb from sea level (PO2 = 210 hPa) to 8,848 m (PO2 = 70 hPa) over a 31-day period of confinement in a decompression chamber ('Everst-Comex 97'). During these investigations, the subjects were required to discriminate between colors of different hue in the red, blue, and green ranges. Alterations in color discrimination increased slightly but significantly as altitude increased. Impairments occurred mainly in the red and blue ranges. In addition, our results further indicate that color discrimination would be affected only when a minimum threshold of difference between color stimuli is not present. Methodological and physiological implications are discussed.
C Bouquet; B Gardette; C Gortan; P Therme; J H Abraini
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Perceptual and motor skills     Volume:  90     ISSN:  0031-5125     ISO Abbreviation:  Percept Mot Skills     Publication Date:  2000 Feb 
Date Detail:
Created Date:  2000-05-18     Completed Date:  2000-05-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0401131     Medline TA:  Percept Mot Skills     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  169-79     Citation Subset:  IM; S    
Laboratoire de Neurosciences Cellulaires et Intégratives, Université Henri Poincaré Nancy.
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MeSH Terms
Adaptation, Psychological / physiology
Anoxia / physiopathology*,  psychology*
Atmosphere Exposure Chambers
Color Perception* / physiology
Discrimination (Psychology)* / physiology
Form Perception* / physiology
Middle Aged
Models, Biological
Models, Psychological
Stress, Physiological / physiopathology,  psychology

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