Figure 6.

PL neurons did not show significant changes in intrinsic excitability with conditioning or extinction. A, Depolarizing steps at different current intensities evoked a similar number of PL spikes in the three groups. B, Bar graph showing no difference in the maximum number of evoked spikes in PL subregion between the groups. C, Average data showing that the duration of ISIs in the NAIVE and EXT groups did not differ for the PL subregion. D, Average data for the sAHP showing no difference between groups for the PL subregion.