[Freesurfer] Extract overlay value from fsaverage ROIs

, but all I would need is the mean for individual ROIs on fsaverage. Thanks for your help! - Dr. Christine Ecker Section of Brain Maturation (PO50) Department of Psychological Medicine De Crespigny Park, Denmark Hill London SE5 8AF Phone: 0207 848 0947 Email

[Freesurfer] Sulcal depth measures

Is there any way of measuring sulcal depth with FreeSurfer? Or is sulcal depth simply measured by the positive values in ?h.sulc - i.e. negative values are 'gyral heights' and positive values are 'sulcal depths'? If so is it possible to calculate these values for certain parcellated regions such a

[Freesurfer] Parameter comparison in native vs. template space

I would like to export cortical thickness measures and compare the data across subjects in a vertex-by-vertex fashion. Please could you confirm that similar functions such as mri_glmfit are based on the parameters in template space e.g. lh.thickness.fsaverage.mgh and not on the parameters in nativ

[Freesurfer] Qdec display error

Hi, I am using freesurfer v4.0.2 on Mac OS Tiger and am getting a qdec error message: WARNING: Marker for class Main was invalid And ERROR: In /usr/pubsw/packages/KWWidgets/CVS/src/KWW., line 1182 VtkKWQdecApp : TclTkerror: Invalid command ... "vtkTemp249" I have substituted to old vers

[Freesurfer] Freesurfer analysis on synthetic images

make it work. Thanks, Christine - Dr. Christine Ecker Section of Brain Maturation (PO50) Department of Psychological Medicine De Crespigny Park, Denmark Hill London SE5 8AF Phone: 0207 848 0947 Email: [EMAIL PROTECTED