Hi Eylem,
I'm not sure what you mean. Do you mean you have some new areas that you want to project onto the surface of an existing subject? For that you will need the subject surfaces, which we are happy to give you.
cheers, Bruce On Wed, 27 May 2009, Eylem Kirlangic wrote:
If I am to introduce further areas for projection (or construction on the surface), what procedure should I follow?
Thanks, Eylem
Nick Schmansky wrote:
The BA/MT/V1/V2 maps are label files in the subjects/fsaverage/label directory distributed with freesurfer. See also:
http://surfer.nmr.mgh.harvard.edu/fswiki/BrodmannAreaMaps
The entorhinal maps are not included with freesurfer.
Nick
On Tue, 2009-05-19 at 13:15 -0400, Bruce Fischl wrote:
We also have a number of these probability maps constructed on the surface, and I think they are now part of the distribution (is that true Nick?). We have maps for BA17, 18, 1, 2, 3a, 3b, 4a, 4p, 6, 44, 45, area MT and entorhinal cortex (the last of which we built ourselves from ex vivo MRI). Note that the surface maps are much more accurate than the volume maps, so you are better off using them as opposed to taking say the map in Tal coords and mapping it to your subject.
cheers, Bruce
On Tue, 19 May 2009, Douglas N Greve wrote:
We have a program called mri_vol2surf which does the projection, and tksurfer which does the visualization. But you need to make sure that the surface and volume are in registration. This is done with tkregister2. Usually, the volume you are sampling to the surface and the surface itself are from the same subject.
You might want to check out our tutorial on this:
https://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/MultiModal
doug
m.e.kirlangic@fz-juelich.de wrote:
Dear Freesurfer Community,
I am quite new in freesurfer, getting just acquainted with the tools. What I am currently trying to do is, projecting 3-D voxel data (i.e. postmortem probability maps of Prof. Katrin Amunts and Prof. Karl Zilles in Research Center Juelich -Germany) onto the cortical surface. For the time being, I assume that both types of data are registered to a reference space (e.g., Collin27-brain).
Which functions I would/could need for the calculations and visualization? Which data format(s) is/are required in order to be able to make use of the available freesurfer functions? Any guidance and all tips are very welcome :-) And sorry for any inconvenience using the terminology!
Thanks, Eylem Kirlangic
Forschungszentrum Jülich GmbH 52425 Jülich
Sitz der Gesellschaft: Jülich Eingetragen im Handelsregister des Amtsgerichts Düren Nr. HR B 3498 Vorsitzende des Aufsichtsrats: MinDir'in Bärbel Brumme-Bothe Geschäftsführung: Prof. Dr. Achim Bachem (Vorsitzender), Dr. Ulrich Krafft (stellv. Vorsitzender), Prof. Dr. Harald Bolt, Prof. Dr. Sebastian M. Schmidt