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  • 1
    Electronic Resource
    Electronic Resource
    Sleep and circadian rhythm during a short space mission (1993)
    Springer
    Journal of molecular medicine 71 (1993), S. 718-724 
    Details
    ISSN: 1432-1440
    Keywords: Sleep regulation ; Body temperature ; Circadian rhythm ; Mood ; Space mission
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An experiment was conducted to assess sleep and circadian regulation in an orbiting space-craft. In orbit the weakened influence of 24-h zeitgebers could result in delayed circadian phases with the possibility of a transition to free-running circadian rhythms. This and the specific stressors of a space mission may lead to changes in ultradian sleep regulation and in reduced sleep quantity and quality. During the mission sleep was recorded polygraphically on tape, as was body temperature. Daytime alertness was rated subjectively by a mood questionnaire. For comparison the same parameters were measured during a baseline period preceding the space mission. The circadian rhythms of body temperature and alertness were found to be delayed in space compared to baseline. This may mark a phase shift or the transition to a circadian state of free-run. Sleep was shorter and more disturbed. The structure of sleep was significantly altered. In space REM latency was shorter, there was less REM sleep in the second non-REM/REM cycle, and slow-wave sleep was redistributed from the first to the second cycle. The self-assessed mood resembled sleep disturbances and adaptation to the space environment. Reduced sleep quality and quantity are likely to result in fatigue and lower daytime performance. Countermeasures should be adopted to improve sleep of astronauts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00209726
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Langzeitmonitoring psychophysiologischer Größen in der Flugphysiologie (1997)
    Springer
    Der Internist 38 (1997), S. 755-769 
    Details
    ISSN: 1432-1289
    Keywords: Schlüsselwörter Jet-Lag ; Zirkadiane Rhythmik ; Leistungstests ; psychologische ; Leistungstests ; physiologische ; Langzeitmonitoring ; Polysomnographie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zum Thema Die physische und psychische Beanspruchung dürfte bei keiner Berufsgruppe so extrem hoch sein wie bei Flugpiloten. Somit eignet sich dieser Personenkreis auch vorzüglich zur Ermittlung diesbezüglicher Daten. Unter der Vielzahl belastender Faktoren sind die durch ständige Überwindung von Zeitzonen gestörte zirkadiane Rhythmik und die sehr langen, oft irregulären Arbeitszeiten bei sonstiger körperlicher Immobilität am wichtigsten. Eine breit gefächerte Fülle von psychologischen, physiologischen und physiologisch-chemischen Meßmethoden dient dazu, diese Belastungen mittels entsprechender Daten zu objektivieren. Die Synopsis aller Meßergebnisse hat das Ziel, die Belastbarkeitsgrenzen rechtzeitig zu erkennen und die Flugsicherheit zu erhalten und zu verbessern.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001080050087
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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