Figure  5: Effects of g_to on spiral-wave meandering patterns. (a) Tip-trajectory evolution for different g_to values during 220 ms. (a.I) g_to = 0.0050 mS is the value for the standard guinea-pig ventricle model, (a.II) g_to = 0.0 mS - I_to is blocked, (a.III) g_to= 0.0025 mS - half the standard value, (a.IV) g_to = 0.01mS - double the standard value. Action potential configurations with different g_to values are shown superimposed for single (b) and repetitive stimulation (c). The inset plots in (b) and (c) are magnifications of the corresponding parts of the main plot. The g_to values are given in the legend (tin s, Vin mV).