Yes, you use a "per-vertex map" (--pvr option to mri_glmfit). See, example, this thread https://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg18790.html

On 6/3/2021 10:22 AM, stdp82@virgilio.it wrote:

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Hi,

how can I perform vertex by vertex (surface) analysis of covariance between functional connectivity data (FS-FAST) and cortical thickness, regressing out the effect of groups?

My mean concern is how buid the fsgd file.

Stefano

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