期刊
SCIENCE
卷 337, 期 6094, 页码 595-599出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1219712
关键词
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资金
- European Research Council Advanced Grant SOMACCA
- University of Vienna
- Austrian Science Fund (FWF) [P 23099]
- Deutsche Forschungsgemeinschaft [LO1413/2]
- National Institute for Deafness and Other Communication Disorders [R01 DC 008612]
- Austrian Science Fund (FWF) [P 23099] Funding Source: researchfish
Elephants can communicate using sounds below the range of human hearing (infrasounds below 20 hertz). It is commonly speculated that these vocalizations are produced in the larynx, either by neurally controlled muscle twitching (as in cat purring) or by flow-induced self-sustained vibrations of the vocal folds (as in human speech and song). We used direct high-speed video observations of an excised elephant larynx to demonstrate flow-induced self-sustained vocal fold vibration in the absence of any neural signals, thus excluding the need for any purring mechanism. The observed physical principles of voice production apply to a wide variety of mammals, extending across a remarkably large range of fundamental frequencies and body sizes, spanning more than five orders of magnitude.
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