Astronomical References in Biological Rhythms

  • C. P. Richter


This paper concerns three periodic phenomena which because of their roles as timing devices in the lives of animals may be.called clocks:
  • 24 -Hour Clocks

  • 29–30 Day Clock

  • Yearly Clock

Clocks of squirrel monkeys and Norway rats — the two most commonly used animals for these studies — keep time with great accuracy for months or even years. These biological clocks can be quite as accurate as our mechanical clocks.


Active Phasis Ground Squirrel Squirrel Monkey Biological Rhythm Biological Clock 
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  1. Richter, Curt. P.: (1938) Two Day Cycles of Alternating Good and Bad Behavior in Psychotic Patients. Arch. Neurol. Psychiat. 39: 587–698.Google Scholar
  2. Richter, Curt. P.: (1965) Biological Clocks in Medicine and Psychiatry. Springfield, Illinois: Charles C. Thomas.Google Scholar
  3. Richter, Curt. P.: (1966) A Hitherto Unrecognized Difference Between Man and Other Primates. Sci. 154: 427.Google Scholar
  4. Richter, Curt. P.: (1967) Sleep and Activity: Their Relation to the 24 -Hour Clock. Sleep and Altered States of Consciousness. William and Wilkens, Vo. 45: 8–29.Google Scholar
  5. Richter, Curt. P.: (1968) Inherent Twenty-Four Hour and Lunar Clocks of a Primate — the Squirrel Monkey. Corn. Behay. Biol. Part A, 1: 305–32.Google Scholar
  6. Richter, Curt. P.: (1968) Periodic Phenomena in Man and Animals: Their Relation to Neuroendocrine Mechanisms. (A Monthly or Nearly Monthly Cycle). Endocrinol. and Human Behay.: 284–309. London, New York: Oxford University Press.Google Scholar
  7. Richter, Curt. P.: (1971) Inborn Nature of the Rat’s 24 -Hour Clock. J. Comp. & Physiol. Psychol. 75: 1–4.Google Scholar
  8. Aschoff, J.: Circadian Clocks. Amsterdam: North-Hollant Publishing Co., 1965.Google Scholar
  9. Bunning, E.: The Physiological Clock. New York: Academic Press, 1964.Google Scholar
  10. Conroy, R.T.W.L. and J.N. Mills: Human Circadian Rhythms. London: J. & A. Churchill, 1970.Google Scholar
  11. Fisher, K.C.; A.R. Dawe; C.P. Lyman; E. Schonbaum; F.E. South, Jr.: Mammalian Hibernation III. Edinburgh, London: Oliver & Boyd,. 1967.Google Scholar
  12. Reimann, H.A.: Periodic Diseases. Philadelphia: F.A. Davis Co., 1963.Google Scholar
  13. Strughold, H.: Your Body Clock. New York: Charles Scribner’s Sons, 1971.Google Scholar
  14. Ward, R.R.: The Living Clocks. New York: Alfred A. Knopf, 1971.Google Scholar
  15. Cold Spring Harbor Symposia on Quantitative Biology. Biological Clocks. Vol. XXV. Cold Spring Harbor, N.Y.: The Biological Laboratory, 1960.Google Scholar
  16. National Institute of Mental Health. Biological Rhythms in Psychiatry and Medicine. Chevy Chase, Md.: 1970.Google Scholar

Copyright information

© Springer-Verlag New York Inc. 1975

Authors and Affiliations

  • C. P. Richter

There are no affiliations available

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