Spike AHP duration and amplitude systematically change along the DV axis.

<p>(A and B) Examples of AHP in the normal ACSF in a dorsal (A) and a ventral cell (B). The AHP was induced by one action potential elicited by a 1 ms current injection from the baseline membrane potential of −60 mV. Inset shows this action potential. (C and D) Examples of AHP in carbachol (10 µM) in a dorsal (C) and a ventral cell (D). (E) Amplitudes of AHP in normal ACSF plotted on the DV axis. (F) Duration of AHP in normal ACSF plotted on the DV axis. (G) Correlation between the amplitude of AHP and the adaptation amplitude in normal ACSF. Adaptation amplitudes of exponential fit with and without the first two spikes are plotted with blue and red dots, respectively. The color code is the same for all other plots. (H) Correlation between the duration of AHP and the adaptation amplitude in normal ACSF. (I) Amplitudes of AHP in carbachol plotted on the DV axis. (J) Duration of AHP in carbachol plotted on the DV axis. (K) Correlation between the amplitude of AHP and the adaptation amplitude in carbachol. (L) Correlation between the duration of AHP and the adaptation amplitude in carbachol.