Figure 6

The high increment of release probability during sequential presynaptic spikes enhances the capacity and precision of spike encodings at postsynaptic GABAergic cells. A-C) show the integrated signals from unitary glutamatergic synapses under the conditions of release probability increments (ΔP) about 0, 0.05 and 0.1. D-F) show spike patterns induced by the integrated signals from unitary synapses under the conditions of release probability increments (ΔP) about 0, 0.05 and 0.1. G) shows the comparisons of standard deviation of spike timing (SDST) versus spikes under the conditions of release probability increments (ΔP) about 0 (square symbols), 0.05 (circles) and 0.1 (triangles, n = 7). H) shows the comparisons of inter-spike intervals (ISI) versus spikes under the conditions of release probability increments (ΔP) about 0 (square symbols), 0.05 (circles) and 0.1 (triangles). Calibration bars are 60 pA, 20 mV and 300 ms. Lines in G ~ H illustrate linear dynamical fitting.