Figure 5: Intrinsic excitability of layer 4 PV and PCs in the four different genotypes.

(a) Example recording traces depicting action potential firing of PV cells in response to step depolarizing currents (duration 600 ms) in slices from P30 WT (black), PV-Cre (red), flox-Mecp2 (blue) and PV-Mecp2−/y (green) mice. (b) Plot of evoked spike rates versus current magnitudes (I/O curve) of PV cells from WT and other three genotypes. *0.01<P<0.05, t-test. (c,d) Same tests on PC cells recorded from same slices of the four different genotypes. (e,f) Same tests on PV cells recorded from cortical slices of P50 PV-Mecp2−/y (purple) mice. P-values were calculated by t-test when comparing with the data from P30 PV-Mecp2−/y (light green). Average data are presented as mean±s.e.m.