{"product_id":"ultradian-rhythms-from-molecules-to-mind-a-new-vision-of-life-von-david-lloyd-ernest-rossi-hrsg","title":"Ultradian Rhythms from Molecules to Mind","description":"5. 1. 1 Biological Rhythms and Clocks From an evolutionary perspective, the adaptation of an organism’s behavior to its environment has depended on one of life’s fundamental traits: biological rhythm generation. In virtually all light-sensitive organisms from cyanobacteria to humans, biological clocks adapt cyclic physiology to geophysical time with time-keeping properties in the circadian (24 h), ultradian (24 h) domains (Edmunds, 1988; Lloyd, 1998; Lloyd et al. , 2001; Lloyd and Murray, 2006; Lloyd, 2007; Pittendrigh, 1993; Sweeney and Hastings, 1960) By definition, all rhythms exhibit regular periodicities since they constitute a mechanism of timing. Timing exerted by oscillatory mechanisms are found throughout the biological world and their periods span a wide range from milliseconds, as in the action potential of n- rons and the myocytes, to the slow evolutionary changes that require thousands of generations. In this context, to understand the synchronization of a population of coupled oscillators is an important problem for the dynamics of physiology in living systems (Aon et al. , 2007a, b; Kuramoto, 1984; Strogatz, 2003; Winfree, 1967). Circadian rhythms, the most intensively studied, are devoted to measuring daily 24 h cycles. A variety of physiological processes in a wide range of eukaryotic organisms display circadian rhythmicity which is characterized by the following major properties (Anderson et al. , 1985; Edmunds, 1988): (i) stable, autonomous (self-sustaining) oscillations having a free-running period under constant envir- mental conditions of ca.\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9789048178520\"\u003e\u003ch3\u003eA New Vision of Life\u003c\/h3\u003e\u003c\/div\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9781402083518\"\u003e\u003ch3\u003eA New Vision of Life\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9789048178520","offer_id":39416644403293,"sku":"9789048178520","price":160.49,"currency_code":"EUR","in_stock":true},{"title":"Hardcover - 9781402083518","offer_id":28557324877917,"sku":"9781402083518","price":160.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/740d92e9-b799-4500-a512-b3a0b988d0f5.jpg?v=1759381151","url":"https:\/\/shop.autorenwelt.de\/products\/ultradian-rhythms-from-molecules-to-mind-a-new-vision-of-life-von-david-lloyd-ernest-rossi-hrsg","provider":"Autorenwelt Shop","version":"1.0","type":"link"}