Thank you very much for the idea Nick, this explained everything. In qdec red means X>Y
we didn't notice the thickness data on that plot at first :(
Have a wonderful week !
Sincerely, Alex.
--- En date de : Dim 27.2.11, Nick Schmansky nicks@nmr.mgh.harvard.edu a écrit :
De: Nick Schmansky nicks@nmr.mgh.harvard.edu Objet: Re: [Freesurfer] Qdec - ROI - different thickness results À: "Alex Hanganu" hanganu.alexandru@yahoo.de Cc: "FS Mailing List" Freesurfer@nmr.mgh.harvard.edu Date: Dimanche 27 février 2011, 0h28
the easiest way to determine X from Y and blue from red (ie, which group is getting thicker or thinner) is to Ctrl-right click on a vertex within the region of interest on the cortex result display. a plot will appear showing the raw thickness values for your groups, and which-is-which should obvious.
n.
On Fri, 2011-02-25 at 15:33 +0000, Alex Hanganu wrote:
Dear Freesurfer Experts,
In qdec for question: "Does the average thickness differ between X and Y" we received blue colored regions, meaning that thickness for group Y is lower then X ?
We created ROIs for each region, and extracted cortical thickness for each ROI for each subject using mris_anatomical_stats.
in results: for each ROI, mean cortical thickness of Y group are higher then X.
is it a mistake, or the question was misunderstood ?
Sincerely, Alex.
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