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  • 1
    Electronic Resource
    Electronic Resource
    Phase-dependent shift of free-running human circadian rhythms in response to a single bright pulse (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 1205-1207 
    Details
    ISSN: 1420-9071
    Keywords: Human circadian rhythm ; bright light pulse ; phase-shift ; temporal isolation ; phase response curve
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Responsiveness of free-running human circadian rhythms to a single pulse of bright light was examined in a temporal isolation unit. Bright light (5000 lx) of either 3 or 6 h duration, applied during the early subjective day, produced phase-advance shifts in both the sleep-wake cycle and the rhythm of rectal temperature; the light pulse had essentially no effect on the phase of the circadian rhythms, when it was introduced during the late subjective day or the early subjective night. The results indicate that bright light can reset the human circadian pacemaker.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01945525
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Entrainment of human circadian rhythms by artificial bright light cycles (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 572-574 
    Details
    ISSN: 1420-9071
    Keywords: Human circadian rhythm ; entrainment ; artificial bright lights ; temporal isolation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Artificial bright light cycles (LD 8∶16) of about 5000 lux during the light period were applied to two subjects in a temporal isolation unit, who had shown free-running circadian rhythms in sleep-wakefulness and rectal temperature. The circadian rhythms were successfully entrained by the artificial light cycle, but the phase relation of the rhythms to the light cycle was substantially different between the two subjects. The result indicated that the artificial bright lights are able to reset human circadian rhythms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02143589
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Application of multivariate autoregressive modelling for analysing chloride/potassium/bicarbonate relationship in the body (1993)
    Springer
    Medical & biological engineering & computing 31 (1993), S. S99 
    Details
    ISSN: 1741-0444
    Keywords: Autoregressive model ; Chloride ; Metabolic alkalosis ; Potassium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The authors repeatedly analysed course data of acid-base disturbances accompanying hypochloraemia and/or hypokalaemia by means of multivariate autoregressive modelling. It was found that the regulatory relationship between chloride and bicarbonate is inverse between the following two hypochloraemic hyperbicarbonataemic states: the one induced by chloride depletion and the other induced by CO2 retention. Also, the study revealed an independent role of potassium deficiency in the development of metabolic alkalosis, especially in cases with mineralocorticoid-induced alkalosis. The present approach enabled the authors to solve a long-standing problem, i.e. to differentiate between the roles of chloride and potassium in the development of metabolic alkalosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02446657
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    Paper (German National Licenses)
    Fulltext
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