Hello Freesurfer experts,
Just a question about smoothing. I did recon-all -qcache to get pre-smoothed fsaverage surface at 0, 5, 10, 15, 20 and 25mm FWHM, so for mris_preproc I used the "--cache-in" option (eg. for the *10mm.fsaverage file). When I run mri_glmfit, I see the option "--fwhm". Is this option for those who did not pre-smooth their data so that they can do the smoothing there? If I'm using a *.thickness.10.mgh file (10mm FWHM) obtained from the previously described steps as my input file (--y), then by specifing again a value in --fwhm does it mean I'm 'double' smoothing my data?
Jeni ------- Jeni Chen, M.Sc. Agente de recherche Laboratoire de recherche en neuropsychologie de la douleur Pav. Paul-G. Desmarais, Université de Montréal CP 6128, Succ. A, Montréal, QC H3C 3J7 Tel: 514-343-6111 x4359
Hi Jeni, yes that means you would be double smoothing your data. doug
On 7/29/12 6:03 PM, Jeni Chen wrote:
Hello Freesurfer experts,
Just a question about smoothing. I did recon-all -qcache to get pre-smoothed fsaverage surface at 0, 5, 10, 15, 20 and 25mm FWHM, so for mris_preproc I used the "--cache-in" option (eg. for the *10mm.fsaverage file). When I run mri_glmfit, I see the option "--fwhm". Is this option for those who did not pre-smooth their data so that they can do the smoothing there? If I'm using a *.thickness.10.mgh file (10mm FWHM) obtained from the previously described steps as my input file (--y), then by specifing again a value in --fwhm does it mean I'm 'double' smoothing my data?
Jeni
Jeni Chen, M.Sc. Agente de recherche Laboratoire de recherche en neuropsychologie de la douleur Pav. Paul-G. Desmarais, Université de Montréal CP 6128, Succ. A, Montréal, QC H3C 3J7 Tel: 514-343-6111 x4359
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Jeni Chen