Hi Laura,
To be sure, you are currently using -regress_ROI_PC and you
would instead like to simply regress the ROI average, is that
correct? If so, replease -regress_ROI_PC with just -regress_ROI.
For example, if you current remove 3 PCs from the ventricles via:
-regress_ROI_PC FSvent 3
to remove just the average time series, change it to:
-regress_ROI FSvent
Does that seem like what you want?
- rick
