Figure 7

Somatic responses at steady state of the parabolic and compartmental models, when the step current given by (84) is placed at different input locations. Here the origin of the spatial coordinate is placed at the somatic node. The models are purely passive with the electrical parameters as in Fig. 6 except \(R_{a}=1000~\varOmega \cdot \mbox{cm}\). The parabolic geometry is defined by Eq. (66), where \(r_{0}=1~\mu\mbox{m}\), \(r_{1}=0.01~\mu\mbox{m}\) and \(l_{0}=100~\mu\mbox{m}\). The compartmental geometry is defined by Eq. (82) for \(N=1, 2, 4\)