ok thats what i thought but just wanted to double check... Thx

----- Original Message ----- From: "Nick Schmansky" nicks@nmr.mgh.harvard.edu To: "Ritobrato Datta" ridatta@mail.med.upenn.edu Cc: "freesurfer" freesurfer@nmr.mgh.harvard.edu Sent: Tuesday, February 16, 2010 12:58:07 PM GMT -05:00 US/Canada Eastern Subject: Re: [Freesurfer] question abt mri_vol2surf....

the default surf is the 'white' surf, but this only means the coordinates in the output surface file will have the white surface coordinates. the vertices still remain one-to-one matched between the white-pial-and-inflated-(and-sphere), so the -surf arg is irrelevant for your group analysis.

n.

On Tue, 2010-02-16 at 10:04 -0500, Ritobrato Datta wrote:

Hello All,

I have a simple question. I have functional data (3 mm cubic voxels) from 20 subjects that I am using mri_vol2surf to resample on the fsaverage surface. I want to run qdec or mri_glmfit on these data. In order to do grp stats with functional data, what surface do I need to specify in the '--surf' flag ? Does it matter ?

Thanks

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