[Freesurfer] graph of region neighborhood

2011-10-12 Thread Satrajit Ghosh
hi folks, do you happen to have any tool/script that produces a graph of aparc region neighborhood? with perhaps the edge weight being the length of shared boundary. cheers, satra ___ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu

Re: [Freesurfer] WM hypointensities and corpus callosum mislabeling

2011-10-12 Thread Bruce Fischl
Hi Warren it's always hard/impossible to diagnose from snapshots. Can you upload an entire subject's dir to the file drop? Bruce On Wed, 12 Oct 2011, Warren Winter wrote: Let me try this again. Here's one that mislabeled parts of the CC as left cerebral white matter at the center slice:

Re: [Freesurfer] WM hypointensities and corpus callosum mislabeling

2011-10-12 Thread Bruce Fischl
p.s. the first one at least looks like so much subject motion that the scan may not be usable On Wed, 12 Oct 2011, Warren Winter wrote: Let me try this again. Here's one that mislabeled parts of the CC as left cerebral white matter at the center slice: Another one mislabels nearly the

Re: [Freesurfer] Brain stem volume

2011-10-12 Thread Bruce Fischl
Hi Heather, I think the answer is that we don't really know. Hopefully the level at which we cut off the brainstem is consistent as it's based on the curvature of the enclosing surface that we fit, but we've never looked at it thanks Bruce On Wed, 12 Oct 2011, Lugar, Heather wrote: I

Re: [Freesurfer] QDEC labels vs annotations

2011-10-12 Thread Douglas N Greve
I don't know how the PALS atlas was created. The method to create the v1 label was validated by Oliver Hinds (don't have the ref handy). doug krista kelly wrote: I'm using the labels saved in QDEC to extract cortical thickness values for certain regions. For example, I've used the lh.v1.label

Re: [Freesurfer] Group Average of Retinotopy Results

2011-10-12 Thread Douglas N Greve
If you want to combine across subjects, then you need to run the analysis on fsaverage (ie, rerun preproc-sess, create a new analysis, run selxavg3-sess, and then isxconcat-sess). doug Michelle Umali wrote: Dear Freesurfers, I've generated individual polar, eccentricity, and fieldsign maps

Re: [Freesurfer] QDEC labels vs annotations

2011-10-12 Thread Bruce Fischl
Accurate prediction of V1 location from cortical folds in a surface coordinate system, Hinds, O.P., N. Rajendran, J.R. Polimeni, J.C. Augustinack, G. Wiggins, L.L. Wald, H.D. Rosas, A. Potthast, E.L. Schwartz and B. Fischl (2008). NeuroImage 39:1585-1599.

[Freesurfer] mkcontrasts retinotopy cannot find eccen error

2011-10-12 Thread Jodie Davies-Thompson
Dear FreeSurfers, I am new to Freesurfer and attempting to run a very basic analysis, but am finally stuck after trying 3 alternative ways of displaying the data. Any help would be greatly appreciated! I have 4 wedges/quadrants (no expanding rings), and want to show areas responding to each

[Freesurfer] Group Average of Retinotopy Results

2011-10-12 Thread Michelle Umali
Hi Doug, I'm a little confused as to how to assign functional data to the fsaverage space. 1) Do you mean just change each subject's subjectname file to fsaverage and then do the same thing as before for each person? 2) Also, when I specify the analysis do I change -rtopy.self.lh to