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We demonstrate numerically that a brief burst consisting of two to six spikescan propagate in a stable manner through a one-dimensional homogeneousfeedforward chain of non-bursting neurons with excitatory synaptic connections.Our results are obtained for two kinds of neuronal models, leakyintegrate-and-fire (LIF) neurons and Hodgkin-Huxley (HH) neurons with fiveconductances. Over a range of parameters such as the maximum synapticconductance, both kinds of chains are found to have multiple attractors ofpropagating bursts, with each attractor being distinguished by the number ofspikes and total duration of the propagating burst. These results makeplausible the hypothesis that sparse precisely-timed sequential bursts observedin projection neurons of nucleus HVC of a singing zebra finch are intrinsic andcausally related.Comment: 13 pages, 6 figure

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