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In this Dissertation, I detail how two vocal motor pathways (vocal motor pathway and anterior forebrain pathway) contribute to the vocal production in zebra finch adult song. I first describe a model of rapid dissolution and recovery based on partial damage to a primary vocal control region. Second I explore how recovery from destabilization requires auditory feedback and thus reflects a period of vocal plasticity much like vocal development where sensory feedback facilitates a transition from variable to stereotyped motor production. Thirdly, I test two models for the role of the anterior forebrain pathway in recovery from dissolution. I find that the anterior forebrain pathway largely contributes variable patterns of activity during adult vocal production and its ablation facilitates faster recovery. Finally, I explore the nature of the time-variant signal generated by the AFP and show that instead of global modulation across acoustic features, the AFP modulates the variance of specific features of song.
A Dissertation Submitted to the Department of Psychology in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy.
Bibliography Note
Includes bibliographical references.
Publisher
Florida State University
Identifier
FSU_migr_etd-1373
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