I'm not sure I understand what you mean. If you follow the group analysis wiki, it does not give you an option to even create an average subject, and you have to generate the average subject from make_average_subject. The proper path depends on what you want to do exactly.
If you want to do a full analysis on an average subject, then you'll need to create the average subject with make_average_subject. Then you will need to register your individuals to this subject with surfreg --s individual --t averagesubject ... Then run mris_preproc with --target averagesubject --surfreg averagesubject.sphere.reg If you want to simply display the results on the average group anatomy, then run make_average_subject to create the average. Run mris_preproc using fsaverage. When you go to display the final result (eg, with tksurfer or freeview), specify the averagesubject instead of fsaverage doug On 04/16/2014 11:03 AM, Jonathan Holt wrote: > Hi all, > > I’m currently trying to generate an average subject for two groups so that I > might be able to display average thickness for both groups. I’m confused as > to whether I should be following the GroupAnalysis workflow in the wiki, or > if I should use make_average_subject and mris_preproc in tandem, but for the > latter option (if it is the appropriate one) how should I use the two > together, if that’s the right approach? > > jon > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ 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.