Well, it's a pretty straightforward format, but we have created all the icosahedral supersamplings there are in that range. On Thu, 30 Mar 2017, Almarshad F. wrote:

hi Bruce;

thanks for your help, i needed to create tri file with a different number of areas to use it with mris_make_face_parcellation? can you help with the best way to do that?

any tool or functions outside freesurfer

thank in advance ________________________________________ From: freesurfer-bounces@nmr.mgh.harvard.edu [freesurfer-bounces@nmr.mgh.harvard.edu] on behalf of Bruce Fischl [fischl@nmr.mgh.harvard.edu] Sent: Tuesday, March 28, 2017 2:40 PM To: Freesurfer support list Subject: Re: [Freesurfer] volume parcellation

Hi fati

the tri files are just pre-generated super-sampled icosahedra. Not sure what you mean about using it for fmri data. Certainly you can use it to parcellate the cortex from structural data and then average fmri data within each parcel - is that what you mean? cheers Bruce On Tue, 28 Mar 2017, Almarshad F. wrote:

...

hi

can we use mris_make_face_parcellation for fMRI data? or is there any way to do random volumetric parcellation for fMRI?

and if you can advise how to generate .tri file

many thanks..

fati

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