Poulson, T.L. and Jegla, (1969) `Circadian Rhythms in Cave Animals’, Actes of the Fourth International Congress of Speleology , 4–5 , Ljubljana, Yugoslavia, 193–5Poulson, T.L., and Jegla, T.C. 1969. Circadian rhythms in cave animals. In Biospeleology--Prehistoric Speleology: ...
L. (1968) Evidence of circadian rhythms in a cave crayfish. J. exp. Zool. 168: pp. 273-282Jegla TC, Poulson TL. 1968. Evidence of circadian rhythms in a cave crayfish. J Exp Zool 168:273-82.Jegla TC, Poulson TL (1968) Evidence of circadian rhythms in a cave crayfish. J Exp ...
The initial focus was to rigorously establish that the rhythms in animals were endogenously controlled by recording them after eliminating Zeitgebers (exogenous cues, such as daily light and temperature cycles). Experiments in caves showed that oscillations indeed were maintained under these conditions, ...
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The temporal niche that an animal occupies includes a coordinated suite of behavioral and physiological processes that set diurnal and nocturnal animals apart. The daily rhythms of the two chronotypes are regulated by both the circadian system and direct responses to light, a process called masking....
It's because you—and most other animals—have a kind of internal clock that controls the cycle of the day's biological activities, such as sleeping and waking. These daily biological activities are known ascircadian rhythmsbecause they are influenced by the regular intervals of light and dark ...
night after night. Animals also exhibit other kinds of cyclic behavior. The timing of reproduction is cyclic, and in some mammals, such as some rodents and bats, daily or seasonal shifts occur between highly active and torpid states. Migratory movements are also cyclic. Daily activity rhythms, ...
Stone WS (1989) Sleep and aging in animals. Relationships with circadian rhythms and memory. Clin Geriatr Med 5:363–379Stone, W. S. (1989). Sleep and aging in animals: Relationships with circadian rhythms and memory. Clinics in Geriatric Medicine , 5 , 363–379....
The rhythmic changes in disaccharidase activities continued for at least 2 days after starvation, but completely disappeared after 5 days of starvation. It was suggested that the disaccharidase rhythms are not a direct consequence of food intake, but that anticipation of food intake acts as a ...
In mammals, the circadian rhythms are regulated by the central clock located in the hypothalamic suprachiasmatic nucleus (SCN), which is composed of heterogeneous neurons with various neurotransmitters. Among them an inhibitory neurotransmitter, γ-Amino