Re: [Freesurfer] surface-based spatial smoothing model

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