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Author (up) Aschoff, J.
Title Temporal orientation: circadian clocks in animals and humans Type Journal Article
Year 1989 Publication Animal Behaviour Abbreviated Journal Animal Behaviour
Volume 37 Issue Pages 881-896
Keywords Human Health; Animals
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ISSN 0003-3472 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 713
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Author (up) Aschoff, J.
Title Phasenlage der Tagesperiodik in Abhngigkeit von Jahreszeit und Breitengrad Type Journal Article
Year 1969 Publication Oecologia Abbreviated Journal Oecologia
Volume 3 Issue 2 Pages 125-165
Keywords Ecology
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ISSN 0029-8519 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 712
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Author (up) Aschoff, J.
Title Circadian Activity Pattern with Two Peaks Type Journal Article
Year 1966 Publication Ecology Abbreviated Journal
Volume 47 Issue 4 Pages 657-662
Keywords Ecology
Abstract The 24-hr rhythms of behavior and other physiological functions are based upon an endogenous self-sustained oscillation. This is proven by experiments in which animals, kept in constant conditions, show a freerunning circadian period which deviates to a certain degree from that of the earth's rotation. The 24-hr rhythms of activity are furthermore characterized by typical patterns of which the one with two peaks in one period is most common. Under natural conditions, these two peaks of activity are often closely related to specific stimuli in the environment; e.g. to dawn and dusk. They have therefore been described as being directly caused by the environment. However, one may consider not only the circadian period but also the pattern part of an endogenous system. This hypothesis has been tested in experiments with finches. The results are: 1) Birds kept in artificial light-dark cycles show the same two-peak pattern either in cycles with interposed twilight or in cycles with rectangular changes between light and dark, 2) Under constant conditions, the second peak may disappear; but more often, it either remains or becomes more pronounced tan under conditions of a light-dark cycle. 3) With different levels of constant intensity of illumination, the birds show different circadian periods and different durations of activity; under those conditions, the two peaks keep the same proportional relationship to the activity time regardless of its duration. It is concluded that the basic two-peak pattern of locomotor activity is a persistent property of the circadian oscillating system.
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 711
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Author (up) Aschoff, J.
Title Comparative physiology: diurnal rhythms Type Journal Article
Year 1963 Publication Annual Review of Physiology Abbreviated Journal Annu Rev Physiol
Volume 25 Issue Pages 581-600
Keywords Human Health; Adaptation, Physiological; *Periodicity; *Adaptation, Physiological; *Periodicity
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Language English Summary Language Original Title
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ISSN 0066-4278 ISBN Medium
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Notes PMID:13965146 Approved no
Call Number LoNNe @ kagoburian @ Serial 710
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Author (up) Aschoff, J.
Title Aktivitäitsmuster der Tagesperiodik Type Journal Article
Year 1957 Publication Die Naturwissenschaften Abbreviated Journal
Volume 44 Issue 13 Pages 361-367
Keywords Human Health
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Notes Approved no
Call Number LoNNe @ kagoburian @ Serial 709
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