This is the readme for the simple model described in the paper: Hsu CL, Zhao X, Milstein AD, Spruston N (2018) Persistent sodium current mediates the steep voltage dependence of spatial coding in hippocampal pyramidal neurons. Neuron 99, 1–16 This model requires NEURON which is freely available from http://neuron.yale.edu Usage: Compile the mod files with a command like "nrnivmodl" (linux/unix) or use mknrndll (mswin or mac os x). Run by executing any of the startX.hoc files where X=CC, InOutCurve or VC. An example command on the linux/unix platform: nrngui StartVC.hoc After the simulation has completed, plots similar to Figure 5A (X=CC), 5B (X=VC) or 6A (X=InOutCurve) will be generated.