English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

We propose a functional architecture of the adult songbird nucleus HVC inwhich 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 productionof one syllable in vocalization. Within each FSU, the inhibitory neuronpopulation takes one of two operational states: (A) simultaneous firing whereinall inhibitory neurons fire simultaneously, and (B) competitive firing of theinhibitory neurons. Switching between these basic modes of activity isaccomplished via changes in the synaptic strengths among the inhibitoryneurons. The inhibitory neurons connect to excitatory projection neurons suchthat during state (A) the activity of projection neurons is suppressed, whileduring state (B) patterns of sequential firing of projection neurons can occur.The latter state is stabilized by feedback from the projection to theinhibitory neurons. Song composition for specific species is distinguished bythe manner in which different FSUs are functionally connected to each other.  Ours is a computational model built with biophysically based neurons. Weillustrate that many observations of HVC activity are explained by the dynamicsof the proposed population of FSUs, and we identify aspects of the model thatare currently testable experimentally. In addition, and standing apart from thecore features of an FSU, we propose that the transition between modes may begoverned by the biophysical mechanism of neuromodulation.

Model of the Songbird Nucleus HVC as a Network of Central Pattern Generators