Figure 8.

Paired-pulse ratio and failure rate of four types of synapses in the ACC. (A) Traces showing postsynaptic currents in the four types of synaptic connections induced by the two successive presynaptic stimulations (100 ms interval). (B) Summarized results of paired-pulse depression in all four types of synaptic connections. There is no significant difference between excitatory (pooled Py-Py and Py-In, indicated as a red line) and inhibitory (pooled In-Py and In-In, indicated as a blue line) synaptic transmission. (C) Summarized results of failure rates in all four types of synaptic connections. There is a significantly lower failure rate for inhibitory (pooled In-Py and In-In, indicated as blue line) than for excitatory (pooled Py-Py and Py-In, indicated as red line) transmission.