Stable propagation of a burst through a one-dimensional homogeneous excitatory chain model of songbird nucleus HVC.

Journal Article

We demonstrate numerically that a brief burst consisting of two to six spikes can propagate in a stable manner through a one-dimensional homogeneous feedforward chain of nonbursting neurons with excitatory synaptic connections. Our results are obtained for two kinds of neuronal models: leaky integrate-and-fire neurons and Hodgkin-Huxley neurons with five conductances. Over a range of parameters such as the maximum synaptic conductance, both kinds of chains are found to have multiple attractors of propagating bursts, with each attractor being distinguished by the number of spikes and total duration of the propagating burst. These results make plausible the hypothesis that sparse, precisely timed sequential bursts observed in projection neurons of nucleus HVC of a singing zebra finch are intrinsic and causally related.

Full Text

Duke Authors

Cited Authors

  • Li, M; Greenside, H

Published Date

  • July 2006

Published In

Volume / Issue

  • 74 / 1 Pt 1

Start / End Page

  • 011918 -

PubMed ID

  • 16907138

International Standard Serial Number (ISSN)

  • 1539-3755

Digital Object Identifier (DOI)

  • 10.1103/PhysRevE.74.011918

Language

  • eng

Conference Location

  • United States