The paper author's matlab model of channel rhodopsin is available at the authors web site http://bme.sunysb.edu/labs/eentcheva/publications.htm Note from the ModelDB administrator: I had to addpath the folders e.g.: addpath('ChR2 model simulation files/') etc. within the expanded archive even though the matlab code includes addpath commands. It is likely a difference between the authors running the code on windows and my use on the mac. The two main programs in the seperate folders generated these figures: Figure 2B in the paper, simulated ChR2 in an HEK cell, similar to the middle trace: A cardiac cell as in Figure 7: