Transmission of temporally correlated spike trains through synapses with short-term depression
Fig 3
Correlated occupancy, release and post-synaptic voltage statistics when there are multiple contacts per presynaptic cell.
(A) Illustration of a case with one presynaptic cell N = 1 making three contacts n = 3. Shown in descending order: presynaptic spike train (α = 0.4, r = 5Hz), occupancy of the three release sites (restock λ = 2Hz), the corresponding release-event time courses (p = 0.6), and the voltage time course (see Table 1 for parameters). (B) The occupancy correlation 〈xz〉∞ for a pair of sites receiving the same presynaptic spike train and the covariance (see Eqs 34 and 35). (C) The cross-covariance of release events from a pair of sites sharing the same presynaptic cell (Eq 39). (D) Post-synaptic voltage standard deviation (top: from Eq 42) and CV (bottom) as a function of α for four combinations of N, n as marked. With each of these choices, where Nn = 1000, the mean voltage (Eq 32) is the same as in Fig 2D. The code used to generate this figure is provided in the Supporting Material.