Syringeal specialization of frequency control during song production in the Bengalese finch (Lonchura striata domestica).

<h4>Background</h4>Singing in songbirds is a complex, learned behavior which shares many parallels with human speech. The avian vocal organ (syrinx) has two potential sound sources, and each sound generator is under unilateral, ipsilateral neural control. Different songbird species vary...

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Autores principales:	Kristen R Secora, Jennifer R Peterson, Catherine M Urbano, Boah Chung, Kazuo Okanoya, Brenton G Cooper
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/893de0745507473a8747fe3da0a8578a
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spelling	oai:doaj.org-article:893de0745507473a8747fe3da0a8578a2021-11-18T07:24:12ZSyringeal specialization of frequency control during song production in the Bengalese finch (Lonchura striata domestica).1932-620310.1371/journal.pone.0034135https://doaj.org/article/893de0745507473a8747fe3da0a8578a2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22479543/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Singing in songbirds is a complex, learned behavior which shares many parallels with human speech. The avian vocal organ (syrinx) has two potential sound sources, and each sound generator is under unilateral, ipsilateral neural control. Different songbird species vary in their use of bilateral or unilateral phonation (lateralized sound production) and rapid switching between left and right sound generation (interhemispheric switching of motor control). Bengalese finches (Lonchura striata domestica) have received considerable attention, because they rapidly modify their song in response to manipulations of auditory feedback. However, how the left and right sides of the syrinx contribute to acoustic control of song has not been studied.<h4>Methodology</h4>Three manipulations of lateralized syringeal control of sound production were conducted. First, unilateral syringeal muscular control was eliminated by resection of the left or right tracheosyringeal portion of the hypoglossal nerve, which provides neuromuscular innervation of the syrinx. Spectral and temporal features of song were compared before and after lateralized nerve injury. In a second experiment, either the left or right sound source was devoiced to confirm the role of each sound generator in the control of acoustic phonology. Third, air pressure was recorded before and after unilateral denervation to enable quantification of acoustic change within individual syllables following lateralized nerve resection.<h4>Significance</h4>These experiments demonstrate that the left sound source produces louder, higher frequency, lower entropy sounds, and the right sound generator produces lower amplitude, lower frequency, higher entropy sounds. The bilateral division of labor is complex and the frequency specialization is the opposite pattern observed in most songbirds. Further, there is evidence for rapid interhemispheric switching during song production. Lateralized control of song production in Bengalese finches may enhance acoustic complexity of song and facilitate the rapid modification of sound production following manipulations of auditory feedback.Kristen R SecoraJennifer R PetersonCatherine M UrbanoBoah ChungKazuo OkanoyaBrenton G CooperPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 3, p e34135 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kristen R Secora Jennifer R Peterson Catherine M Urbano Boah Chung Kazuo Okanoya Brenton G Cooper Syringeal specialization of frequency control during song production in the Bengalese finch (Lonchura striata domestica).
description	<h4>Background</h4>Singing in songbirds is a complex, learned behavior which shares many parallels with human speech. The avian vocal organ (syrinx) has two potential sound sources, and each sound generator is under unilateral, ipsilateral neural control. Different songbird species vary in their use of bilateral or unilateral phonation (lateralized sound production) and rapid switching between left and right sound generation (interhemispheric switching of motor control). Bengalese finches (Lonchura striata domestica) have received considerable attention, because they rapidly modify their song in response to manipulations of auditory feedback. However, how the left and right sides of the syrinx contribute to acoustic control of song has not been studied.<h4>Methodology</h4>Three manipulations of lateralized syringeal control of sound production were conducted. First, unilateral syringeal muscular control was eliminated by resection of the left or right tracheosyringeal portion of the hypoglossal nerve, which provides neuromuscular innervation of the syrinx. Spectral and temporal features of song were compared before and after lateralized nerve injury. In a second experiment, either the left or right sound source was devoiced to confirm the role of each sound generator in the control of acoustic phonology. Third, air pressure was recorded before and after unilateral denervation to enable quantification of acoustic change within individual syllables following lateralized nerve resection.<h4>Significance</h4>These experiments demonstrate that the left sound source produces louder, higher frequency, lower entropy sounds, and the right sound generator produces lower amplitude, lower frequency, higher entropy sounds. The bilateral division of labor is complex and the frequency specialization is the opposite pattern observed in most songbirds. Further, there is evidence for rapid interhemispheric switching during song production. Lateralized control of song production in Bengalese finches may enhance acoustic complexity of song and facilitate the rapid modification of sound production following manipulations of auditory feedback.
format	article
author	Kristen R Secora Jennifer R Peterson Catherine M Urbano Boah Chung Kazuo Okanoya Brenton G Cooper
author_facet	Kristen R Secora Jennifer R Peterson Catherine M Urbano Boah Chung Kazuo Okanoya Brenton G Cooper
author_sort	Kristen R Secora
title	Syringeal specialization of frequency control during song production in the Bengalese finch (Lonchura striata domestica).
title_short	Syringeal specialization of frequency control during song production in the Bengalese finch (Lonchura striata domestica).
title_full	Syringeal specialization of frequency control during song production in the Bengalese finch (Lonchura striata domestica).
title_fullStr	Syringeal specialization of frequency control during song production in the Bengalese finch (Lonchura striata domestica).
title_full_unstemmed	Syringeal specialization of frequency control during song production in the Bengalese finch (Lonchura striata domestica).
title_sort	syringeal specialization of frequency control during song production in the bengalese finch (lonchura striata domestica).
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/893de0745507473a8747fe3da0a8578a
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Syringeal specialization of frequency control during song production in the Bengalese finch (Lonchura striata domestica).

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