| Autor: |
L. Dux, P. Remes, L. Lehoczky, J. Hideg, L. Bognár |
| Rok vydání: |
1981 |
| Předmět: |
|
| DOI: |
10.1016/b978-0-08-027340-2.50056-0 |
| Popis: |
Publisher Summary This chapter discusses the changes in hemodynamics, blood oxygen saturation level, and central nervous system in response to postural loading. During periods of adaptation to weightlessness and post flight readaptation to the earth gravity, the working capacity of space crew members decreases to a troublesome extent. In an attempt to eliminate unfavorable factors decreasing working capacity, it is necessary to develop complex noninvasive methods of investigation that can be used in the most different situations for a right assessment of the health condition of astronauts. The chapter discusses an experiment for clarifying what changes occur in the cerebral bioelectric activity in response to the changes of systemic circulation in which electroencephalograms were recorded in 12 leads during all the period of the experiment. Vestibular disorders were identified by electrooculograms in 2 leads with the analysis of nystagmoid eye movements. The experiment provides evidence that the noninvasive transcutaneous oxymetry offers objective data for the estimation of changes in oxygen saturation level in different posture and contributes to a better assessment of tolerance. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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