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. Author manuscript; available in PMC: 2011 Sep 8.
Published in final edited form as: Brain Res. 2010 May 10;1345:1–8. doi: 10.1016/j.brainres.2010.05.009

Figure 4.

Figure 4

Presynaptic inhibition of IPSCs by serotonin. A1 and B1, average IPSCs in the same cell evoked by stimuli in a control solution (90 trials) and serotonin-containing solution (43 trials), respectively. Stimulus artifacts have been suppressed. A2 and B2: variance of the current records shown in A1 and B1. A3 and B3: single, high-gain sweeps of spontaneous IPSCs with sizes that are similar to the estimated size of the quanta that comprise the evoked IPSCs in this cell. C: IPSC amplitude histogram from a cell bathed in serotonin showing that 1 to 5 quanta with an estimated size of 14 pA are present in the evoked IPSCs observed in this cell. Note that there were 3 failures in 23 trials.