Short Term Synaptic Depression Imposes a Frequency Dependent Filter on Synaptic Information Transfer

doi:10.1371/journal.pcbi.1002557

Short Term Synaptic Depression Imposes a Frequency Dependent Filter on Synaptic Information Transfer

Figure 8

Synaptic filtering at the population level.

A population, , of Poisson presynaptic spike trains with pairwise correlation drive a postsynaptic neuron to produce postsynaptic conductances, . (A) The cross-spectrum between the total presynaptic input and the total conductance. (B) The power spectrum of the total conductance has maximal power within the beta frequency band for both the deterministic (dashed red) and stochastic (solid blue) models. (C) The coherence between the total presynaptic input and the total conductance. Stochastic vesicle dynamics increase the power spectrum and therefore decrease the coherence, especially at low frequencies. All three plots are obtained in the absence of a rate-coded signal ().

doi: https://doi.org/10.1371/journal.pcbi.1002557.g008