External Email - Use Caution My doubt is, if it is possible to use a FSGD file to add variables to a --paired-diff analysis. If it is, what would be the right way to format the FSGD file.
Thanks in advance. On Wed, Oct 30, 2019 at 3:01 PM Greve, Douglas N.,Ph.D. < dgr...@mgh.harvard.edu> wrote: > I don't understand. What per hemisphere variable? > > On 10/25/2019 3:15 AM, Jose Graterol wrote: > > 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 > listfreesur...@nmr.mgh.harvard.eduhttps://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
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