All of the numerical simulations movies and graphics were done using a software package called "matlab". If you're curious about what the code for the travelling pulse problem looks like, download the following files:
To run the code, enter matlab and type "Run" (with a capital "r") then return. It takes several minutes to complete the run on a Sparc Ultra 5 so you may need to wait.
Matlab can run on PC, Mac and UNIX platforms. If you'd like an intro to UNIX or Matlab here are some links:
If you are further interested, read through tQhe first 4 labs of an old Math 441 course at: HERE