Biological Timekeeping: Clocks, Rhythms and Behaviour by Vinod Kumar

By Vinod Kumar

This publication is a concise, accomplished and updated account of basic thoughts and strength functions of organic timekeeping mechanisms in animals and people. It additionally discusses major elements of the association and value of timekeeping mechanisms in either teams. Divided into seven sections, it addresses very important points together with basic suggestions; animal and human clocks; clock interactions; clocks and metabolism and immune features; pineal, melatonin and timekeeping; and clocks, photoperiodism and seasonal behaviours. The publication additionally specializes in organic clock purposes in a 24x7 human society, rather in reference to lifestyle linked issues like weight problems and diabetes. it's a important source for complicated undergraduates, researchers and execs engaged within the research of the technological know-how of organic timekeeping.

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Winfree also considered the dynamics of populations of weakly coupled limit cycle oscillators, realizing that their behavior could be quite different from that of one oscillator alone, and he surmised, as we now know, that intercellular synchronization might determine as much about clock dynamics as does its autonomous cellular mechanism [54]. As early as 1957, Pittendrigh and Victor Bruce (1920–2009) constructed a block diagram of a canonical timekeeping system including input, pacemaker, and output [55] (Fig.

Waterhouse reflex activity and cognition, it seems likely that effects of muscle fatigue, time awake (mental fatigue) and exogenous factors will all be superimposed upon a clock-driven component. 1 Background Homoeostasis – maintaining variables within viable limits in spite of an individual’s lifestyle and environment – is fundamental to physiology. Nevertheless, if a variable is measured regularly throughout a period of 24 h in subjects living normally (eating/being active in the daytime, sleeping at night), daily rhythms are found.

Bünning E (1973) The physiological clock, Third English edn. Springer, New York, p 9 82. Schwartz WJ (1987) In vivo metabolic activity of the hamster suprachiasmatic nuclei: use of anesthesia. Am J Physiol 252:R419–R422 83. Ward RR (1971) The living clocks. Alfred Knopf, New York, 385 pp Chapter 2 Interpreting Circadian Rhythms Dietmar Weinert and James Waterhouse Abstract (A) Most daily rhythms are impure reflections of the body clock’s output due to exogenous components and effects of the sleep-wake cycle.

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