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 nitenson@nmr.mgh.harvard.edu Phone: 617-643-3215