Journal ArticleDOI
Frequency Modulation During Song in a Suboscine Does Not Require Vocal Muscles
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TLDR
This work investigates sound production and control of sound frequency in the Great Kiskadee by recording air sac pressure and vocalizations during spontaneously generated song and assumes a nonlinear restitution force for the oscillating membrane folds in a two mass model of sound production to reproduce the frequency modulations of the observed vocalizations.Abstract:
The physiology of sound production in suboscines is poorly investigated. Suboscines are thought to develop song innately unlike the closely related oscines. Comparing phonatory mechanisms might therefore provide interesting insight into the evolution of vocal learning. Here we investigate sound production and control of sound frequency in the Great Kiskadee (Pitangus sulfuratus) by recording air sac pressure and vocalizations during spontaneously generated song. In all the songs and calls recorded, the modulations of the fundamental frequency are highly correlated to air sac pressure. To test whether this relationship reflects frequency control by changing respiratory activity or indicates synchronized vocal control, we denervated the syringeal muscles by bilateral resection of the tracheosyringeal nerve. After denervation, the strong correlation between fundamental frequency and air sac pressure patterns remained unchanged. A single linear regression relates sound frequency to air sac pressure in the intact and denervated birds. This surprising lack of control by syringeal muscles of frequency in Kiskadees, in strong contrast to songbirds, poses the question of how air sac pressure regulates sound frequency. To explore this question theoretically, we assume a nonlinear restitution force for the oscillating membrane folds in a two mass model of sound production. This nonlinear restitution force is essential to reproduce the frequency modulations of the observed vocalizations.read more
Citations
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FoxP2 and Basal Ganglia Function in Zebra Finch Vocal Motor Learning and Control
TL;DR: This dissertation asks related questions of the molecular and physiological basis of vocal learning through the lenses of the transcription factor FoxP2 and cortico-basal ganglia function and suggests that dynamic behavior-linked regulation of FoxP1 is critical for vocal learning.
Journal ArticleDOI
Rhythm: Similar Structure in Birdsong and Music Gives Neuroethological Insight.
TL;DR: Analysis of the rhythm structure of the songs of two songbird species and corpora of human music finds compelling similarities in rhythm categories and the effects of tempo, giving insight into the neuroethological basis of song and music production.
Influência da massa corporal, da filogenia e do habitat sobre a estrutura da vocalização de aves brasileiras
TL;DR: Tese (doutorado)-Universidade Federal de Uberlândia, Instituto de Biologia, Programa de Pos-Graduacao em Ecologia e Conservacao de Recursos Naturais, 2010.
Journal ArticleDOI
Revisiting the two-mass model of the vocal folds
TL;DR: In this article, the authors revisited a two-mass model of the vocal folds that includes accurate fluid mechanics for the air passage through the folds and nonlinear properties of the tissue.
Journal ArticleDOI
Does learning matter? Birdsong-learning program determines coping strategies for living in urban noisy environments
Hector Fabio Rivera-Gutierrez,Vannesa Jaramillo-Calle,Andrea Lopera-Salazar,Dariel Martinez-Alvarado +3 more
TL;DR: In this article , the role of vocal learning in adapting to urban environments was investigated. And the authors provided clear evidence that passerine species, depending on their song-learning ability, use different strategies to cope with noise, suggesting that vocal learning determines how birds cope with the masking effect of urban noise.
References
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Book
Applied Regression Analysis and Other Multivariable Methods
TL;DR: In this article, the authors compare two straight line regression models and conclude that the Straight Line Regression Equation does not measure the strength of the Straight-line Relationship, but instead is a measure of the relationship between two straight lines.
Journal ArticleDOI
BIRDSONG AND HUMAN SPEECH: Common Themes and Mechanisms
TL;DR: Human speech and birdsong have numerous parallels, with striking similarities in how sensory experience is internalized and used to shape vocal outputs, and how learning is enhanced during a critical period of development.
Journal ArticleDOI
A comparative study of the behavioral deficits following lesions of various parts of the zebra finch song system: implications for vocal learning.
TL;DR: It is concluded that Area X and LMAN contribute differently to song acquisition: the song variability that is typical of vocal development persists following early deafness or lesions of Area X but ends abruptly following removal of LMAN.
Journal ArticleDOI
Forebrain lesions disrupt development but not maintenance of song in passerine birds
TL;DR: Lesions in the magnocellular nucleus of the anterior neostriatum of passerine birds disrupted song development in juvenile male zebra finches but did not affect maintenance of stable song patterns by adult birds.
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