Nature abounds with periodic phenomena: from the motion of a swing to the oscillations of an atom, from the chirping of a grasshopper to the orbits of the heavenly bodies. And our terrestrial bodies, too, participate in this universal minuet — from the heart beat to the circadian rhythm and even longer cycles.
Dust Manganese Coherence Chalk Aliasing
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E. Basar: Toward a physical approach to integrative physiology. I. Brain dynamics and physical causality. Am. J. Physiol. 245 (Regulatory Integrative Comp. Physiol. 14), R510— R533 (1983);Google Scholar
see also A. Abraham, A. Mandel and D. Farmer, in Proceedings Nonlinear Functions of the Brain (Santa Barbara 1982 )Google Scholar
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