Not sure whether anyone'd seen my last email (below). Again apologies for the multitude of questions, I hope this is the last batch for this analysis..
On 12 May 2013 16:45, Tudor Popescu <tud...@gmail.com> wrote: > Dear Freesurfer experts, > > I very much appreciate your help with an additional set of questions. I > feel I'm really close to getting this finished :) > > 1) In a design with group and gender as discrete factors and age as a > continuous factor, why is it that QDEC only displays the contrast "Does the > avg thickness, accounting for gender, differ between group1 and group2?" > and not also "..acounting for gender and age,.."? > > 2) In QDEC, if I am left with a cluster after setting the FDR rate to 0.1, > does that qualify as a "trend towads significance" in the same way as when > obtaining a p value <.1 for a behavioural effect? > > 3) From the group tutorial, I see that mris_preproc has to be called with > flag "--cache-in ess.fwhm10thickn.fsaverage". However, after running > recon-all (including with the –qcache option) on all my subjects, none of > their folders contains a file named ?h.thickness.fwhm10.fsaverage.mgh > > 4) When comparing two healthy groups, is there anything to gain from using > a fsaverage built from the sample (with make_average_subject) as opposed to > using the default fsaverage? > > 5) What is the difference between running make_average_subject and running > mris_preproc with --target fsaverage? > > 6) For my ROI mri_glmfit analysis, I wanted to use the FSGD and contrast > files that were automatically created when I did my QDEC whole-brain > analysis, since the design will be the same. However, although I identified > the FSGD file (qdec.fsgd), I cannot see any plaintext file in the QDEC > folder that looks like it contains contrast definitions! > > Thanks! > Tudor >
_______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
