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> 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 > 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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