Dear Dr. Park, I guess you are asking about freesurfer related surface smoothing. Although I am not exactly sure how FreeSurfer is implmenting surface smoothing, the general theory of suface-based smoothing and FWHM can be found in two of my previous publications:
Chung, M.K., Worsley, K.J. , Paus, T., Cherif, C., Giedd, J.N., Rapoport, J.L, Evans, A.C. 2001. A Unified Statistical Approach to Deformation-Based Morphometry, NeuroImage 14:595-606. http://www.math.mcgill.ca/chung/deformation/ni_deformation.pdf Chung, M.K., Robbins,S., Dalton, K.M., Davidson, Alexander, A.L., R.J., Evans, A.C. 2005. Cortical thickness analysis in autism via heat kernel smoothing. NeuroImage 25:1256-1265. http://www.stat.wisc.edu/~mchung/papers/ni_heatkernel.pdf These softwares implemented in MATLAB can be found in my webpage http://www.stat.wisc.edu/~mchung/softwares/sotfwares.html for other type of triangular meshes. Moo. On 6/27/05, Hae-Jeong Park, PhD <[EMAIL PROTECTED]> wrote: > > > Hi, > > I would like to know the relationship between number of iteration in surface > smoothing and Gaussian kernel size in FWHM. > > Would you give me some information on this? Thank you in advance. > > Hae-Jeong > > -- > Hae-Jeong Park, PhD > Assistant Professor, Department of Diagnostic Radiology, > Yonsei University, College of Medicine > and Division of Nuclear Medicine, Severance Hospital Director, > Laboratory of Molecular Neuroimging Technology > http://neuroimage.yonsei.ac.kr > Tel) 82-2-2228-2363, Fax) 82-2-393-3035 > Cellur) 82-10-4220-1003 > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > -- Moo Chung http://www.stat.wisc.edu/~mchung Assistant Professor Department of Statistics University of Wisconsin-Madison _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
