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Model of the Songbird Nucleus HVC as a Network of Central Pattern Generators ...
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Abstract:
We propose a functional architecture of the adult songbird nucleus HVC in which the core element is a "functional syllable unit" (FSU). In this model, HVC is organized into FSUs, each of which provides the basis for the production of one syllable in vocalization. Within each FSU, the inhibitory neuron population takes one of two operational states: (A) simultaneous firing wherein all inhibitory neurons fire simultaneously, and (B) competitive firing of the inhibitory neurons. Switching between these basic modes of activity is accomplished via changes in the synaptic strengths among the inhibitory neurons. The inhibitory neurons connect to excitatory projection neurons such that during state (A) the activity of projection neurons is suppressed, while during state (B) patterns of sequential firing of projection neurons can occur. The latter state is stabilized by feedback from the projection to the inhibitory neurons. Song composition for specific species is distinguished by the manner in which different FSUs ... : 20 pages, 9 figures. Submitted to the Journal of Neurophysiology ...
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Keyword:
Biological Physics physics.bio-ph; FOS Biological sciences; FOS Physical sciences; Neurons and Cognition q-bio.NC
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URL: https://dx.doi.org/10.48550/arxiv.1603.04131
https://arxiv.org/abs/1603.04131
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Brain Stem Feedback in a Computational Model of Birdsong Sequencing
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