(A) Individual responses to five brief current injections (2 nA, 2 ms each) to evoke a burst of action potentials in the baseline condition (left, gray, t = 0 min in B), following CCH application (middle, black, t = 10 min in B), and after recovery (right, black, t = 25 min in B). Up-down arrow shows the difference between the AHP and the ADP (Δ post-burst potential) measured at the time of the AHP peak in the baseline condition (arrowhead). (B) Timecourse of the post-burst potential amplitudes. Gray-shaded area indicates period of CCH application. n = 14.