External Email - Use Caution Thanks for your answer. A follow up question: How should I then specify the variable's values per hemisphere while making the FSGD file if I want to add covariates when running mri_glmfit?
Thanks in advance. On Fri, Oct 25, 2019 at 12:18 AM Greve, Douglas N.,Ph.D. < dgr...@mgh.harvard.edu> wrote: > If you are trying to determine whether the hemispheres are different, > then you need to do the subtraction between the hemis (ie, the > --paired-diff). If you want to look at the hemispheres separately, then > don't combine them in a single file > > On 10/21/19 4:58 AM, Jose Graterol wrote: > > > > External Email - Use Caution > > > > Thanks for your answer. > > > > I want to correlate TMS values in 17 stroke patients. Following the > > instructions provided to Anders in this link > > > https://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=subject:%22%5C%5BFreesurfer%5C%5D+flipping+surface+data%22&o=newest&f=1 > > I created the --y file that joins the affected hemispheres together > > and the unaffected hemispheres together. I omitted the --paired-diff > > flag. When I run mri_glmfit with --fsgd it asks for 34 inputs. I am > > guessing those are for the 34 hemispheres of the patients in the order > > mentioned in my first email. Would this be the right way to correlate > > the variables? > > > > In short, I am trying to test if there is a difference in cortical > > thickness, while adding covariates, between the affected and > > unaffected hemispheres in stroke patients. > > > > Thanks in advance > > > > On Fri, Oct 18, 2019 at 3:57 PM Greve, Douglas N.,Ph.D. > > <dgr...@mgh.harvard.edu <mailto:dgr...@mgh.harvard.edu>> wrote: > > > > What are you trying to test? Usually you don't have lh and rh in > > the same glm > > > > On 10/17/19 7:09 AM, Jose Graterol wrote: > >> > >> External Email - Use Caution > >> > >> Dear Freesurfer Community, > >> > >> I have a question regarding the formatting of the FSGD file while > >> doing an analysis with Xhemi. > >> First the --y file was created as previously explained in another > >> discussion > >> ( > https://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg63965.html > ). > >> That is, mris_preproc with --xhemi and no --fsgd flag. > >> > >> If I understood correctly, that would create a mgh file with the > >> following order: sub01lh, sub01rh, sub02lh, sub02rh... > >> Then the FSGD file while running mri_glmfit would be: > >> GroupDescriptorFile 1 > >> Title xxx > >> Class sub > >> Variables var1 > >> Input sub01lh sub var1_lh_sub01 > >> Input sub01rh sub var1_rh_sub01 > >> Input sub02lh sub var1_lh_sub02 > >> Input sub02rh sub var1_rh_sub02 > >> > >> Would this be correct? If so, what would be the best case for > >> specifying a variable like age? Just repeating the value 2 times? > >> > >> As always, thanks in advance > >> > >> Kind Regards > >> > >> José > >> > >> > >> _______________________________________________ > >> Freesurfer mailing list > >> Freesurfer@nmr.mgh.harvard.edu <mailto: > Freesurfer@nmr.mgh.harvard.edu> > >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > > _______________________________________________ > > Freesurfer mailing list > > Freesurfer@nmr.mgh.harvard.edu <mailto: > 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 > > > _______________________________________________ > 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
