The projfrac function might not be working in the way that you think. It might not actually be re-running anything. Did preproc-sess finish faster than you would have expected? You can try deleting the projfrac output and re-running. You can also run preproc-sess with -force, but this will force it to re-run everything. If you want to use multiple project fracs, then you should copy the functional tree to a new location (if you use -p with cp, it will copy the modification time, which will make preproc-sess run faster).
On 2/28/19 12:55 PM, Nasiriavanaki, Zahra wrote: > > Dear Freesurfers > > > Hi > > I was trying to look at the activation in different cortical layers in > a _single subject_. > > I ran my preproc-sess command three times, once without using > -projfrac flag, once -projfrac 0.5 and lastly -projfrac 0.2 > > The activation patterns are exactly the same. > > My voxel sizes are 1.1*1.1*1.1 . > > My question is: > > 1-Is it normal that the activations do not change at all the more I > get closer to white matter? > > 2-when I use -projfrac 0.2 , does it mean that I am averaging the > activation between white matter layer to 0.2 of gray matter layer? Or > is it averaging the activation between pial surface to 0.2 gray matter? > > > I hope my questions are clear. > > > Thanks > > Mona > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
