Fig. 5

Convergence of the four-classes and length-priority methods for a number of dendritic morphologies. The relative error ε of the approximation of $G_{ij}(x,y,t)$ is shown as a function of the number of trips in the sum-over-trips framework for injection at y and measurement at x on the dendritic trees in Fig. 4. Membrane parameters for real dendritic morphologies: $C=1{\text{ μF\hspace{0.17em}cm}}^{-2}$, $R=3\text{,}000\mathrm{\Omega }{\text{\hspace{0.17em}cm}}^2$ and $R_a=100\mathrm{\Omega }\text{\hspace{0.17em}cm}$. Note that the four-classes method always begins with four trips, and each step in the algorithm adds a further trip of each class