Dear experts
Using cortical thickness analysis with Freesurfer I would like to compute small world network indices in a special population. The automated parcellating system is resulting in 66 cortical areas. For our purpose, I would like to subdivide these areas into smaller ones. (A similar methodology was applied by Hagmann et al., PLoS Biol 6: 14791493, 2008.)
Does a finer parcellation scheme become part of future Freesurfer releases? Or have someone some experience in such a procedure?
Any information would be much appreciated.
Kind regards Diana Wotruba
Hi Diana,
you can try mris_divide_parcellation, which I think we distribute. If you don't have it tell us your os/hardware and we'll send you a version.
cheers, Bruce
On Fri, 16 Jan 2009, Diana Wotruba wrote:
Dear experts
Using cortical thickness analysis with Freesurfer I would like to compute small world network indices in a special population. The automated parcellating system is resulting in 66 cortical areas. For our purpose, I would like to subdivide these areas into smaller ones. (A similar methodology was applied by Hagmann et al., PLoS Biol 6: 14791493, 2008.)
Does a finer parcellation scheme become part of future Freesurfer releases? Or have someone some experience in such a procedure?
Any information would be much appreciated.
Kind regards Diana Wotruba _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
This worked perfectly well, thanks a lot for your quick answer!
I would appreciate to get some input for the following issue.
I run the mris_divide_parcellation on the fsaverage brain getting about 1000 parcellations: mris_divide_parcellation fsaverage_fineparc rh aparc.a2005s_150.annot 150 rh_annot_100
Now I would like to spatially register these labels onto each subject's brain, in order to bring these parcellations into a common standard space so that we can compare the parcellations across subjects. I there a manual or a tool for such a procedure?
Thanks in advance Regards Diana
On Fri, 16 Jan 2009 12:48:44 -0500 (EST) Bruce Fischl fischl@nmr.mgh.harvard.edu wrote:
Hi Diana,
you can try mris_divide_parcellation, which I think we distribute. If you don't have it tell us your os/hardware and we'll send you a version.
cheers, Bruce
On Fri, 16 Jan 2009, Diana Wotruba wrote:
Dear experts
Using cortical thickness analysis with Freesurfer I would like to compute small world network indices in a special population. The automated parcellating system is resulting in 66 cortical areas. For our purpose, I would like to subdivide these areas into smaller ones. (A similar methodology was applied by Hagmann et al., PLoS Biol 6: 14791493, 2008.)
Does a finer parcellation scheme become part of future Freesurfer releases? Or have someone some experience in such a procedure?
Any information would be much appreciated.
Kind regards Diana Wotruba _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Hi Diana,
I wonder whether dividing the parcellations is really what you want. It would be pretty easy to put together a parcellation that is uniform in spherical coordinates across subjects, so you get essentially a uniform triangular tiling of each subject's brain. Would that be more useful?
cheers, Bruce
On Wed, 21 Jan 2009, Diana Wotruba wrote:
This worked perfectly well, thanks a lot for your quick answer!
I would appreciate to get some input for the following issue.
I run the mris_divide_parcellation on the fsaverage brain getting about 1000 parcellations: mris_divide_parcellation fsaverage_fineparc rh aparc.a2005s_150.annot 150 rh_annot_100
Now I would like to spatially register these labels onto each subject's brain, in order to bring these parcellations into a common standard space so that we can compare the parcellations across subjects. I there a manual or a tool for such a procedure?
Thanks in advance Regards Diana
On Fri, 16 Jan 2009 12:48:44 -0500 (EST) Bruce Fischl fischl@nmr.mgh.harvard.edu wrote:
Hi Diana,
you can try mris_divide_parcellation, which I think we distribute. If you don't have it tell us your os/hardware and we'll send you a version.
cheers, Bruce
On Fri, 16 Jan 2009, Diana Wotruba wrote:
Dear experts
Using cortical thickness analysis with Freesurfer I would like to compute small world network indices in a special population. The automated parcellating system is resulting in 66 cortical areas. For our purpose, I would like to subdivide these areas into smaller ones. (A similar methodology was applied by Hagmann et al., PLoS Biol 6: 14791493, 2008.)
Does a finer parcellation scheme become part of future Freesurfer releases? Or have someone some experience in such a procedure?
Any information would be much appreciated.
Kind regards Diana Wotruba _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Try mris_divide_parcellation
Diana Wotruba wrote:
Dear experts
Using cortical thickness analysis with Freesurfer I would like to compute small world network indices in a special population. The automated parcellating system is resulting in 66 cortical areas. For our purpose, I would like to subdivide these areas into smaller ones. (A similar methodology was applied by Hagmann et al., PLoS Biol 6: 1479–1493, 2008.)
Does a finer parcellation scheme become part of future Freesurfer releases? Or have someone some experience in such a procedure?
Any information would be much appreciated.
Kind regards Diana Wotruba _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
freesurfer@nmr.mgh.harvard.edu
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Bruce Fischl -
Diana Wotruba -
Douglas N Greve