Publication Date:
1986-03-14
Description:
The vocal organ, or syrinx, of oscine birds has two parts, each of which has generally been presumed to operate independently of the other. A significant counter-example is now demonstrated in the production of a common vocalization by the black-capped chickadee (Parus atricapillus), in which the two acoustic sources interact in a nonlinear fashion. This bird produces a sound with multiple frequency components that are heterodyne products resulting from cross-modulation between two signals, thus providing evidence that avian phonation can involve cooperative coupling between the two syringeal sources.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nowicki, S -- Capranica, R R -- 5 T32 MH 15793-05/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 1986 Mar 14;231(4743):1297-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3945824" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Birds/anatomy & histology/*physiology
;
Sound Spectrography
;
Vocalization, Animal/*physiology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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