Open Daily: 10am - 10pm | Alley door pickup 10am - 7pm 3038 Hennepin Ave Minneapolis, MN
612-822-4611

  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Ultradian Rhythms in Physiology and Behavior

Ultradian Rhythms in Physiology and Behavior

Schulz, Hartmut
Lavie, Peretz

Paperback

Series: Experimental Brain Research, Book 12

Medical ReferenceAnatomy & Physiology

ISBN10: 3642704859
ISBN13: 9783642704857
Publisher: Springer Nature
Published: Dec 6 2011
Pages: 340
Weight: 1.25
Height: 0.74 Width: 6.69 Depth: 9.61
Language: English
Historical Perspective In 1842, in a paper entitled Further Development of a General Law of Vital Periodicity, which was part of a series of seven Lancet papers on periodicities in health and disease, Thomas Laycock wrote: As everything finite must have a period within which its existence is circumscribed, so every period so circumscribing the finite, being a measure of time, must be divisible into lesser periods. But it has always been found easier to reason from generals to particulars than to ascend from particulars to generals, especially in questions in- volving the phenomena of life (p. 423). From a historical perspec- tive, Laycock's insight indeed anticipated the progress of chronobio- logic research. In spite of the abundant evidence pointing at the existence of short-term rhythms with periodicities much shorter than 24 hours, termed ultradian rhythms after Halberg (1964), it has gen- erally been found much easier to investigate circadian rather than uI- tradian rhythms. In m st cases, ultradian rhythms have been ignored, or dismissed as insignificant phenomena, even in cases where they could be easily eyeballed in the data. Laycock himself believed that the most basic periodicity in vital phenomena was 12 hours. Short-term fluctuations in the levels of certain behaviors, which could not be accounted for by external stimulation or by internal stimuli, have been known to ethologists and other observers of animal behavior for many years.

Also in

Medical Reference

View All