Figure 4. Effects on AP transmission of different configurations of Na⁺ channel clusters and gap junctions, for G _gap = 25.3 nS (1% of normal).

A, same configurations, simulations and similar figure layout as in Fig. 3 B, but for a non‐zero gap junctional coupling level of G _gap = 25.3 nS (1% of normal). B, delay between the AP upstrokes in cells 1 and 2 (measured at V _i = 0 mV) as a function of cleft width, for the three ID configurations.