You only need to spec the dofs with a fixed effects analysis. If that's
what you are doing, then you need to sum all the dofs from the lower level.
doug
ps. these types of questions are better to post to the freesurfer
mailing list
Georg Homola wrote:
Hi Doug!
When performing surface-based group analysis with mri_glmfit, I have to
specify the dofs of my feat runs. But when I correct for motion outliers on
first level (by additional confound EVs identified by fsl_motion_outliers)
there will be different dofs for every subject. Is a correct group analysis
still possible? Which dof will be the right one then (the subject with the
least dofs maybe)?
Many thanks in advance
Georg
--
Douglas N. Greve, Ph.D.
MGH-NMR Center
gr...@nmr.mgh.harvard.edu
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