[PDF] Phase Shifts Of The Human Circadian System And Performance Deficit During The Periods Of Transition eBook

Author : G. T. Hauty
Publisher :
Page : 11 pages
File Size : 30,35 MB
Release : 1965
Category :
ISBN :

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At periodic intervals throughout the biological day, biomedical assessments were made for a week prior to jet flight to Rome, for 12 days at Rome, and for a week following return to Oklahoma City. A primary shift of circadian periodicity was mainfested by physiological functions--rectal temperature, heart rate, etc. Increase in fatigue occurred during the primary period of transition and following return, but psychological performance was not impaired during either period. Duration of the fatigue was shorter than the time lag of the physiological phase shifts. (Author).

Author : G. T. Hauty
Publisher :
Page : 20 pages
File Size : 19,98 MB
Release : 1965
Category :
ISBN :

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At periodic intervals throughout the biological day, biomedical assessments were made for a week prior to jet flight to Manila, for 8 days of layover at Manila, and for a week following return. The rapid translocation effected primary phase shifts as follows: for rectal temperature and heart rate, 4 days; for palmar evaporative water loss, 8 days. The return flight effected a 1-day phase shift. Behavoral integrity was degraded, although to a lesser extent after return. Duration of behavioral impairment was much shorter than the lag time of physiological phase shifts. (Author).

Author : G. T. Hauty
Publisher :
Page : 11 pages
File Size : 39,51 MB
Release : 1965
Category :
ISBN :

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At periodic intervals throughout the biological day, biomedical assessments were made for a week prior to jet flight to Santiago, Chile, for 12 days at Santiago, and for a week following return to Washington, D.C. Although previous East-West and West-East flight effected a primary shift of circadian periodicity, as manifested by physiological functions, the North-South flight did not. There was, however, a significant increase of subjective fatigue, as in the other flights. The significant impairment of psychological performance produced by the East-West but not the West-East flight was not shown by the North-South flight. (Author).

Author : D. S. Minors
Publisher : Butterworth-Heinemann
Page : 349 pages
File Size : 22,56 MB
Release : 2013-11-06
Category : Science
ISBN : 148319342X

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Circadian Rhythms and the Human covers the basic principles behind the human circadian rhythms. This book is composed of 12 chapters that discuss the detection, analysis, and definition of rhythms, specifically exogenous and endogenous rhythms. This book also demonstrates the mechanism of metabolic and gastrointestinal rhythms. The opening chapters deal with the rhythms in living organism; establishing the endogeneity of rhythms; definition of nychthemeral rhythm; methods of measuring the frequency of rhythms; exogenous effects upon the temperature rhythm; interaction between exogenous and endogenous influences; and possible origins of renal rhythmicity. The succeeding chapters consider the effect of exercise at different times of day and the concept of sleep-wakefulness rhythm. The discussion then shifts to the effects of repeated time-zone transitions and the effects of time on drug administration. The closing chapters are devoted to the assessment of work performance during shift work. The book can provide useful information to doctors, students, researchers, and the general reader.