Coherent response of the HodgkinHuxley neuron in the high-input regime
We analyze the response of the HodgkinHuxley neuron to a large number of uncorrelated stochastic inhibitory and excitatory post-synaptic spike trains. In order to clarify the various mechanisms responsible for noise-induced spike triggering we examine the model in its silent regime. We report the coexistence of two distinct coherence resonances: the first one at low noise is due to the stimulation of correlated subthreshold oscillations; the second one at intermediate noise variances is instead related to the regularization of the emitted spike trains.
coherence noise hodgkinhuxley model sub- and suprathreshold oscillations