Hi, I am looking for a tool of FreeSurfer. In fact, the tool is supposed to take in input 2 surfaces ( hemispheres) of subjects, registrate the surfaces and display the difference between the 2surfaces ( like 'euclidian distance'). What I want is exactly that output (http://www.sciencedirect.com/science/article/pii/S1053811909010064) availablein this article (http://www.sciencedirect.com/science/article/pii/S1053811909010064).Do you know the tool in question ?Thanks,VP