Figure 5

Early occurrence of WD on the reduction of excitability inside and around a fibroblast clump. Pseudocolour plot of \({V}_{m}\) showing the early occurrence of WD at t \(\simeq \) 1.8 s for the illustrative case of a fibroblast clump with R = 1 cm and \({p}_{f}\) = 30%. Here, we reduce the excitability inside the clump and in an annular region around it (marked by red colour) within a circular region with radius of 1.4 cm (Fig. 1(b)), by reducing the conductance of \({{\rm{I}}}_{{\rm{Na}}}\) (\({{\rm{G}}}_{{\rm{Na}}}\)) by 50%.