Figure 5. Sensitivity of AH neurones to changes in [K+]o.
A, increase in IKir and Ih with elevated [K+]o (same conditions as in Fig. 3B). B, effects of changes in [K+]o on the membrane potential of AH neurones at rest (filled squares, n = 7) and when IAHP is activated (open squares) compared to the theoritical changes for a K+ conductance according to the Nernst relationship (dotted line). Open squares, example of the AHP sensitivity to changes in [K+]o.