Hi all,
I would like to know which model has been implemented for the surface-based spatial smoothing in Freesurfer (for example in mri_vol2surf). Heat kernel smoothing and/or diffusion smoothing?
Thank you Best
Francesca
Hi Francesca
what's the difference? They are both approximations of Gaussians on the surface. We use iterative averaging which is a numerical approximation of a surface-based Gaussian.
cheers Bruce
On Tue, 3 May 2016, Francesca Strappini wrote:
Hi all,
I would like to know which model has been implemented for the surface-based spatial smoothing in Freesurfer (for example in mri_vol2surf). Heat kernel smoothing and/or diffusion smoothing?
Thank you Best
Francesca
-- Francesca Strappini, Ph.D. Neurobiology Department Weizmann Institute of Science 234 Herzl Street, Rehovot 7610001 Israel Tel.: +972 58 444 2584 E-mail: francesca.strappini@weizmann.ac.il
Thank you! Is there a paper I can read as a reference?
2016-05-03 15:53 GMT+03:00 Bruce Fischl fischl@nmr.mgh.harvard.edu:
Hi Francesca
what's the difference? They are both approximations of Gaussians on the surface. We use iterative averaging which is a numerical approximation of a surface-based Gaussian.
cheers Bruce
On Tue, 3 May 2016, Francesca Strappini wrote:
Hi all,
I would like to know which model has been implemented for the
surface-based
spatial smoothing in Freesurfer (for example in mri_vol2surf). Heat
kernel
smoothing and/or diffusion smoothing?
Thank you Best
Francesca
-- Francesca Strappini, Ph.D. Neurobiology Department Weizmann Institute of Science 234 Herzl Street, Rehovot 7610001 Israel Tel.: +972 58 444 2584 E-mail: francesca.strappini@weizmann.ac.il
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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you can reference this one http://www.ncbi.nlm.nih.gov/pubmed/17011792
Smoothing and cluster thresholding for cortical surface-based group analysis of fMRI data.
Hagler DJ Jr http://www.ncbi.nlm.nih.gov/pubmed/?term=Hagler%20DJ%20Jr%5BAuthor%5D&cauthor=true&cauthor_uid=17011792^1 , Saygin AP http://www.ncbi.nlm.nih.gov/pubmed/?term=Saygin%20AP%5BAuthor%5D&cauthor=true&cauthor_uid=17011792, Sereno MI http://www.ncbi.nlm.nih.gov/pubmed/?term=Sereno%20MI%5BAuthor%5D&cauthor=true&cauthor_uid=17011792.
On 05/03/2016 09:03 AM, Francesca Strappini wrote:
Thank you! Is there a paper I can read as a reference?
2016-05-03 15:53 GMT+03:00 Bruce Fischl <fischl@nmr.mgh.harvard.edu mailto:fischl@nmr.mgh.harvard.edu>:
Hi Francesca what's the difference? They are both approximations of Gaussians on the surface. We use iterative averaging which is a numerical approximation of a surface-based Gaussian. cheers Bruce On Tue, 3 May 2016, Francesca Strappini wrote: > Hi all, > > I would like to know which model has been implemented for the surface-based > spatial smoothing in Freesurfer (for example in mri_vol2surf). Heat kernel > smoothing and/or diffusion smoothing? > > Thank you > Best > > Francesca > > -- > Francesca Strappini, Ph.D. > Neurobiology Department > Weizmann Institute of Science > 234 Herzl Street, Rehovot 7610001 Israel > Tel.: +972 58 444 2584 <tel:%2B972%2058%20444%202584> > E-mail: francesca.strappini@weizmann.ac.il <mailto:francesca.strappini@weizmann.ac.il> > > _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu <mailto:Freesurfer@nmr.mgh.harvard.edu> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.-- Francesca Strappini, Ph.D. Neurobiology Department Weizmann Institute of Science 234 Herzl Street, Rehovot 7610001 Israel Tel.: +972 58 444 2584 E-mail: francesca.strappini@weizmann.ac.il mailto:francesca.strappini@weizmann.ac.il
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Thank you!
2016-05-04 21:09 GMT+02:00 Douglas N Greve greve@nmr.mgh.harvard.edu:
you can reference this one http://www.ncbi.nlm.nih.gov/pubmed/17011792
Smoothing and cluster thresholding for cortical surface-based group analysis of fMRI data.
Hagler DJ Jr < http://www.ncbi.nlm.nih.gov/pubmed/?term=Hagler%20DJ%20Jr%5BAuthor%5D&ca...
^1
, Saygin AP < http://www.ncbi.nlm.nih.gov/pubmed/?term=Saygin%20AP%5BAuthor%5D&cauthor...
,
Sereno MI < http://www.ncbi.nlm.nih.gov/pubmed/?term=Sereno%20MI%5BAuthor%5D&cauthor...
.
On 05/03/2016 09:03 AM, Francesca Strappini wrote:
Thank you! Is there a paper I can read as a reference?
2016-05-03 15:53 GMT+03:00 Bruce Fischl <fischl@nmr.mgh.harvard.edu mailto:fischl@nmr.mgh.harvard.edu>:
Hi Francesca what's the difference? They are both approximations of Gaussians on the surface. We use iterative averaging which is a numerical approximation of a surface-based Gaussian. cheers Bruce On Tue, 3 May 2016, Francesca Strappini wrote: > Hi all, > > I would like to know which model has been implemented for the surface-based > spatial smoothing in Freesurfer (for example in mri_vol2surf). Heat kernel > smoothing and/or diffusion smoothing? > > Thank you > Best > > Francesca > > -- > Francesca Strappini, Ph.D. > Neurobiology Department > Weizmann Institute of Science > 234 Herzl Street, Rehovot 7610001 Israel > Tel.: +972 58 444 2584 <tel:%2B972%2058%20444%202584> > E-mail: francesca.strappini@weizmann.ac.il <mailto:francesca.strappini@weizmann.ac.il> > > _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu <mailto:Freesurfer@nmr.mgh.harvard.edu>
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.-- Francesca Strappini, Ph.D. Neurobiology Department Weizmann Institute of Science 234 Herzl Street, Rehovot 7610001 Israel Tel.: +972 58 444 2584 E-mail: francesca.strappini@weizmann.ac.il mailto:francesca.strappini@weizmann.ac.il
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