I'm not sure how I could do that considering that, in the paradigm file, the 1, 3, 5, and 7 loads are all designated with the same condition number (2), while the weight is what varies. My current contrast (2vFix) encompassed all four loads so I'm not sure how I could just make a new contrast without altering the condition number for the 7-load, and thus requiring a new analysis.
-Adam > Hi Adam, why not just make a new contrast with 1, 3, and 5? You can then > run selxavg3-sess -- it will recognized that you only added a contrast > and just re-run the contrast (should be pretty quick). > > doug > > Adam Nitenson wrote: >> Hi Doug and Freesurfers, >> >> I am currently analyzing data acquired from the Sternberg memory >> task, which involves memorizing sets of 1, 3, 5, and 7 letters. I >> have created an analysis (see attached analysis.info and paradigm >> example) which allows me to create maps of the load-based activation >> when going from 1 to 3 to 5 to 7 letters, which accounts for the >> analysis' single "contrast". >> My PI was hoping that, for some subjects, we could look at the >> regression from JUST 1 to 3 to 5, since they have poor 7-letter data. >> >From looking at the analysis setup, it looks like I would have to >> make this change at the paradigm level since subjects have already >> been run with the current analysis with just the 1,3,5,7 regression >> contrast. I would probably have to change the "2"s in the paradigm >> file to "1"s for the 7-letter sets (since the contrast is 2vFix, and >> this alteration would essentially "ignore" the 7-letter condition), >> but a change at the paradigm file level, I believe, would essentially >> necessitate the formation of a new analysis entirely, which would >> then have to be run again individually on subjects, which can be a >> time consuming process. >> I was wondering if there was a way I could bypass this step and >> modify the analysis to suit these newer needs, or will I have to >> essentially make a new analysis based on my current one for this to >> work? >> >> Thanks, >> >> Adam Nitenson, B.S. >> Brain Genomics Lab >> Massachusetts General Hospital >> niten...@nmr.mgh.harvard.edu >> Phone: 617-643-3215 >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> 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: www.nmr.mgh.harvard.edu/facility/filedrop/index.html > > > Adam Nitenson, B.S. Brain Genomics Lab Massachusetts General Hospital niten...@nmr.mgh.harvard.edu Phone: 617-643-3215 _______________________________________________ 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.
