Re: [Freesurfer] Reporting longitudinal change (pc1)

2014-10-02 Thread Martin Reuter
Hi Tudor, if you are trying to just construct a mean thickness map on a subset of your data (e.g. group 1, tp 1) then you could map and smooth the data using mris_preproc The easiest way to pass the subjects is to manually split your longitudinal qdec file into smaller ones to contain only the

[Freesurfer] Reporting longitudinal change (pc1)

2014-10-02 Thread Tudor Popescu
Dear FS list (dear Martin), I have a 3 groups x 2 timepoints data set, and I did analyses in QDEC comparing my groups pairwise (2 at a time) in terms of the pre-to-post percentage change (pc1) in various surface-based metrics like thickness and area. Since a group contrast is a bit difficult for