1st International and 10th National Iranian Conference on Bioinformatics

Nonlinear dynamics of birdsongs

Paper ID : 1408-ICB10

Authors:

Zohreh Dadi *

Abstract:

Interaction between a nervous system and a highly nonlinear vocal device of birds, the syrinx, reveals a complex vocal behavior which is known as birdsong. Birdsong, as an animal model for vocal learning, is a research area of neuroscience. It should be noted that this is not exclusive to birdsong. The work of Zhang and Ghazanfar [1] showed that the vocalizations of marmosets during their development are due to nonlinear interaction between the nervous system and the biomechanics involved in respiration. In this study, we study low dimensional dynamical system, a biomechanical model, which is introduced by Amador and Mindlin [2]. As they stated, this model is important to allow designing precise stimuli for exploring the sensorimotor integration of acoustic signals. By using bifurcation theory, we study some codimension one bifurcations in this model. Investigating bifurcation in this model is important because it is related to to spectrally different sounds.

Keywords:

Vocal behavior; Biomechanical model; Dynamical system; Codimension one bifurcations.

Status : Paper Accepted (Poster Presentation)