Phasic GABAergic inhibition in dentate gyrus granule cells is not affected in SSADH KO mice. (A) Sweeps of spontaneous inhibitory postsynaptic currents (sIPSCs) recorded from granule cells show no differences in WT and SSADH KO mice. (B) Averages of sIPSCs from a WT and a KO cell showing similar waveforms. (C) Histograms summarizing the average frequencies, amplitudes, rise times (10–90%), and the decay time constants of sIPSCs in granule cells recorded from WT, HET, and KO mice. The kinetics of sIPSCs were similar for all groups, showing non-significant differences between the genotypes (P > 0.05).