Dear FreeSurfer, I have written a small matlab stats package for the statistical analysis of surface data (http://www.math.mcgill.ca/keith/surfstat). I've got hold of some matlab functions to read and write FS data from the FS distribution, and modified them to read and write FreeSurfer data (I hope!).

I wanted to add an example of how you could apply it to Free Surfer data. I would love a bit of demo data that I could put on the web (images, not the raw data!). I was wondering if you happened to have data on one subject that had been registered onto the standard icosahedral mesh.

I already have some unregistered FS data, but I thought it might be better to use data on the icosahedral mesh, since this is presumably what registered data would use. The icosahedral mesh is not necessary for SurfStat - it will handle any triangulation scheme as long as it's the same for all subjects.

I'd also really appreciate a FreeSurfer icosahedral spherical surface of the type you use to register surfaces to. SurfStat uses it to "inflate" a surface for better viewing.

Very best wishes,

Keith Worsley Department of Mathematics and Statistics, McGill University 805 ouest, rue Sherbrooke, Montreal, Quebec, Canada H3A 2K6 tel: (514) 398-3842, fax: (514) 398-3899 e-mail: keith.worsley@mcgill.ca, web: http://www.math.mcgill.ca/keith