Dear FS team,
My question is how I should extract the measure of pial surface area from a significant cluster after group-analysis. I performed statistical analysis in QDEC, choosing pial surface area as the measure. I found a significant cluster. Now I would to extract the surface area of this cluster from each subject, so that I can plot the group means. But the numbers I got from the "cache.th20.neg.y.ocn.dat" file are quite small (mean centered at ~1). I am wondering how I should get the correct numbers from each subject.
thank you in advance
Karl
That number is the mean vertex area, so to get the total area for each subject multiply that number by the number of vertices in the cluster.
On 3/21/16 2:29 PM, Karl Liu wrote:
Dear FS team,
My question is how I should extract the measure of pial surface area from a significant cluster after group-analysis. I performed statistical analysis in QDEC, choosing pial surface area as the measure. I found a significant cluster. Now I would to extract the surface area of this cluster from each subject, so that I can plot the group means. But the numbers I got from the "cache.th20.neg.y.ocn.dat" file are quite small (mean centered at ~1). I am wondering how I should get the correct numbers from each subject.
thank you in advance
Karl
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
freesurfer@nmr.mgh.harvard.edu
-
Douglas Greve -
Karl Liu