Dear Freesurfer experts,
after a partial correlation (cortical thickness in different brain regions of 24 Subjects correalted with socres on different neuropsychological scales) I tried to define the minimal and maximal cluster size in Qdec in order to show only the largest effects. I run "mri_surfcluster" and other commands described on http://surfer.nmr.mgh.harvard.edu/fswiki/mri_surfcluster. Unfortunately, it did not work. Should I use all the command lines? What is exactly meant by "inputfile" and "csd csdfile"? I guess my inputfile should be the "table.dat" File and T1-weighted images of all 24 Subjects...?
Thanks in advance!
Dusan
Date: Wed, 7 Mar 2012 16:34:02 -0500 From: greve@nmr.mgh.harvard.edu To: dusanhirjak@hotmail.com CC: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Cluster-Size in Qdec
I don't think tthere is a way in qdec to define either. You can run mri_surfcluster externally to remove clusters under a certain size. With a few tricks you can remove the ones over a certain size too. doug
Dusan Hirjak wrote:
I am a beginner in using Freesurfer. I did an explorative study where I correlated cotical thickness with different neuropsychological parameters: I found positive correlations between cortical thickness and higher scores on different neuropsychological scales in different brain regions. However, some of these brain regions (clusters) with cortical thinning are only covering a very small surface area (blue color). I was now wondering if there is a possibility in Qdec to manually define the minimal and maximal cluster size, which I want to show? Thanks in advance! Dusan
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