Re: [Freesurfer] scale factor in talairach transformations

2009-02-10 Thread Douglas N Greve
Cindy, the brains are not stretched in any way. All computations are done in native anatomical space. The talairach reg is only there for reporting purposes (or to create average subjects). doug Cindy Eckart wrote: Dear freesurfers, I am new in the list and will start with a hopefully not to

Re: [Freesurfer] scale factor in talairach transformations

2009-02-10 Thread Bruce Fischl
Hi Cindy, the values in the various stats files are always in the subject's native space. You may want to include eTIV as a regressor in your modeling, but we don't do normalization by default. cheers, Bruce On Tue, 10 Feb 2009, Cindy Eckart wrote: Dear freesurfers, I am new in the list

[Freesurfer] scale factor in talairach transformations

2009-02-10 Thread Cindy Eckart
Dear freesurfers, I am new in the list and will start with a hopefully not too stupid question... besides a planned cortical thickness analysis I would like to compare the volumes for some cortical parcellation areas between three groups. As far as I understood the freesurfer-procedures the bra