Dear freesurfers,
I am trying to create a map that shows the vertex-wise magnitude of thinning (f.e.) between two groups, similar to Fig5 in Dickerson et al., 2009. I know how to extract the group-average thickness map from the beta.mg (mri_convert beta.mgh group1.mgh --frame 0 etc.), assuming that this is the way to construct the figure. Is there an easy way in freesurfer to compute the difference between these to group-average maps?
Thank you for sharing. Miranka
Hi Miranka, why not create a contrast that computes this difference? When you do this, there will be a gamma.mgh file in the contrast directory that has this information in it. doug
On 04/12/2012 02:06 PM, Miranka Wirth wrote:
Dear freesurfers,
I am trying to create a map that shows the vertex-wise magnitude of thinning (f.e.) between two groups, similar to Fig5 in Dickerson et al., 2009. I know how to extract the group-average thickness map from the beta.mg (mri_convert beta.mgh group1.mgh --frame 0 etc.), assuming that this is the way to construct the figure. Is there an easy way in freesurfer to compute the difference between these to group-average maps?
Thank you for sharing. Miranka _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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Douglas N Greve -
Miranka Wirth