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Science 27 November 1964:
Vol. 146. no. 3648, pp. 1181 - 1183
DOI: 10.1126/science.146.3648.1181
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Articles

Microvibrations in Man and Dolphin

Manfred Haider 1 and Donald B. Lindsley 1

1 Department of Psychology and Physiology, University of California, Los Angeles

Microvibrations were recorded from the dorsal body surface of a bottle-nosed dolphin (Tursiops truncatus) while it swam in water and while it lay on a foam rubber mattress in an air environment. Unlike poikilothermic water-living animals which do not manifest microvibrations, this homeothermic mammal has 13-cycle per second microvibrations similar to those of man and other homeotherms. For comparative purposes, microvibrations of 11 cycles per second were recorded from the arm of a man while lying on the same mattress. The nature and origin of these microvibrations is discussed in relation to physiological tremors and shivering.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)