The aim of this paper is to compare data from longitudinal study of psycho physiological and psychological characteristics of cosmonauts' sleep during pre-start periods, space flights and both immediately after space flights as well as within time delay. Physiological parameters of sleep were registered with mini poly physiograph "SON-K"; originally designed and developed at Bulgarian Academy of Sciences and installed on board of MIR space station. Questionnaires were used to receive data about subjective evaluation of sleep parameters. The results revealed that in the state of highly motivated, general mobilization of the organism (space flights), the subjective evaluations of sleep are very close to the objective evaluations via combination physiological registrations, i.e. electroencephalography, electro cardiology, electromyography registrations as well as breeding frequency and eye, body and limb movements. Data revealed that after flight cosmonauts' evaluation of their sleep significantly differed from objective assessments. A co-relation between sleep EEG data and subjectively reported sleep characteristics exists and is an important indicator of the functional state of the organism and/or of the level of stress reaction. No doubt at sleep consciousness is abolished although mental activity continues at a given levels. There are lots of evidences in the literature about mental activity, logic and responsiveness that persist at the time of sleep and definitely may have a protective role.


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    Title :

    Sleep in microgravity


    Contributors:


    Publication date :

    2005-01-01


    Size :

    800699 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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