Figure 5.

Conditioning-induced effects on IL excitability are caused by associative learning and not by shock presentations. A, Depolarizing steps at different current intensities evoked significantly fewer spikes in the COND group than in the PSEUDO-COND (n = 24 cells) and NAIVE groups. B, Bar graph showing that the maximum number of evoked spikes in IL neurons at any current step. The maximum number of evoked spikes was significantly reduced in the COND group compared with the PSEUDO-COND and NAIVE groups. C, Average data showing that the sAHP in cells from the COND group was significantly enhanced compared with cells from the PSEUDO-COND and NAIVE groups (**p < 0.01).