Bionic Vision Australia-Centre for Neural Engineering-The University of Melbourne-August 2012 These supplementary files are for the paper entitled "Modeling Extracellular Electrical Stimulation II: Computational Validation and Numerical Results" (and are also available from the journal web site:) http://iopscience.iop.org/1741-2552/9/6/065006/media There are four COMSOL files that can be used to generate the finite element simulation of the extracellular electrical stimulation. These files corresponds to the two cases, current density and voltage boundary conditions, presented in the paper. A separate COMSOL file exist for longitudinal and transverse modes of stimulation. To open and run these files COMSOL 4.2a or higher is required. The user can sweep desired parameters if required. It should be noted that to run these files you require high amount of memory. There are four MATLAB files that simulates the theoretical results presented in this paper. These files generate the figures presented in the paper. To run these files MATLAB software package is required. For any inquiry, please contact Bahman Tahayori (bahmant@unimelb.edu.au) or Hamish Meffin (hmeffin@unimelb.edu.au).