Hi Doug, thanks for your reply. I would like to feed the differences into a FFX group analysis, so I think I will need to resort to your workaround. It would be great if you could provide that. Thanks! Caspar
2014-11-10 13:45 GMT-05:00 Douglas N Greve <gr...@nmr.mgh.harvard.edu>: > > To get sig maps for an individual, this is problematic but I could > probably come up with a work-around. For a group analysis, you can > simply compute each taskreg separately, then subtract the two prior to > running mri_glmfit. > doug > > On 11/10/2014 01:36 PM, Caspar M. Schwiedrzik wrote: > > Hi! > > A quick follow-up: > > I have a taskreg file with 6 continuous predictors. I would like to > > run specific contrasts, e.g., predictor 1 vs. mean(predictor 2:6). > > From what I gather, selxavg3-sess will run automatic contrasts on > > taskregs, but the automatic contrasts are against baseline. This is > > not what I need at this point. > > mk-contrast-sess does not like what I am putting in because I do not > > have a paradigm file in which condition numbers are specified. > > Is there a way to compute specific contrasts between multiple > > taskregs, and if not, is there a workaround? > > Thank you very much, Caspar > > > > > > 2014-11-06 15:23 GMT-05:00 Caspar M. Schwiedrzik > > <cschwie...@rockefeller.edu <mailto:cschwie...@rockefeller.edu>>: > > > > Hi! > > I have several external regressors in my analysis that I configure > > with -taskreg in mkanalysis-sess (something like -notask -taskreg > > nameoffile 6). > > I was wondering how to set up mkcontrast-sess to contrast these > > regerssors given that I do not have a paradigm file for them. > > Can I just do something like -a 1 -c 2 -c 3 -c 4 -c 5? > > > > Thanks, Caspar > > > > > > > > > > _______________________________________________ > > 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. > >
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