pIPSCs evoked by photoactivation of a mass of PV or SOM neurons in slice preparations. (a,b) pIPSCs recorded from the same Pyr cells as in Fig. 4a and b, respectively, so that the traces are superimposed with the uIPSCs shown in Fig. 4, respectively. (c–f) Peak amplitude, rising slope, decay tau and total charge of pIPSCs of 15 Pyr cells evoked by the mass activation of PV neurons (left) and those of another 13 Pyr cells evoked by the mass activation of SOM neurons (right).