Figure 5. PTP at PF synapses is expressed presynaptically.
The magnitude of PTP (A, C) and changes in paired-pulse ratio (EPSC2/EPSC1) during PTP (B, C) were determined following PF bursts (10 stimuli at 50 Hz). (A) Summary of magnitude of PTP, with responses normalized to EPSC1 of the burst (n = 9 PCs, n = 14 GCs). (B) Changes in PPR, for the same data set shown in (A).Values are normalized to PPR at time t = 0 s. Representative experiments (C) are shown for synapses onto PCs (black) and GCs (red).