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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