Figure 4.

Dendritic branching of neurons exaggerates the non-linear relationship of R_n-voltage. A comparison of R_n/tau –voltage relationships was calculated from a multi-compartmental model with the same surface area as the isopotential model in Figure 2. Voltage responses of the model to a series of current pulses, as in Figure 2A. Corresponding values from simulation using the isopotential model are represented by dotted lines. Ohmic simulation results are shown in blue.