Abstract
The ground-based studies with isolation (105- and 520-d isolation campaigns within the MARS-500 project) and modeled microgravity (5- and 21-d dry immersion) were aimed to test an integrated method of rapid assessment of the brain energy and electrical activities indicative of a current CNS status and adaptive changes. The method consists of synchronous recording electroencephalogram (EEG), constant potential level (CPL), and a number of psychophysiological tests. Analyzed parameters are a EEG pattern, relative power of EEG θ- (4–8 Hz), α- (8–13 Hz) and β-1- (13–25 Hz) waves, averaged CPL, ΔCPL values, and interhemispheric asymmetry. The method that measures CNS tension in response to psychological and physical stresses, adaptation to an unusual environment, fatigue and readaptation can be used to examine cosmonaut's CNS functioning prior to and after space mission, and in the period of post-mission recovery.
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