Hi Doug, Thank you for your quick answer.
However, there are some points that are still not clear for me:
1-I would like to know also the correlation value (r-pearson; Cth-Variable) of my significant cluster. This is something that I can get directly or I have to do some additional analysis? If yes, which ones??
2-I would know the intercept of this cluster.
3-I’m using mri_segstats to get the average slope, I use: mri_segstats --seg mc-z.abs.th13.sig.ocn.mgh --sum proof But with this I only obtain the NVtx, I think I’m missing something….
Cleo.
________________________________________ De: Douglas N Greve [greve@nmr.mgh.harvard.edu] Enviado el: miércoles, 18 de mayo de 2011 10:25 Para: Gomez,Cleofe P. (BIDMC - Neurology) CC: freesurfer@nmr.mgh.harvard.edu Asunto: Re: [Freesurfer] CORRELATION VALUE
Hi Cleo, the mc correction will generate a segmentation file (something like cache.th20.abs.sig.ocn.mgh). The value at each vertex/voxel in this file correspond to the cluster that the vertex/voxel belongs to (if any). You can use this as the segmentation for mri_segstats and specify the gamma.mgh from your slope contrast to give you the average slope in each cluster.
doug
cgomez@bidmc.harvard.edu wrote:
Hi all,
My design is very simple: 1-group,1-variable 2-nuisance (age,gender). I just want to see the correlation between Cth and my variable. I obtain one cluster after mc-correction. (using freesurfer5)
There is any way to get the intercept,slope or r-pearson (in average) values of this particular cluster.
What I've done is transform this cluster in a label to then visually inspect the Graph Average ROI, but I want the numerical results.
Thanks in advance for your useful help.
Cleo.
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