Sorry to follow up with another question, Rick, but I've been assuming that I should be using the errts file as my output for the resting state analysis, but it still seems a bit too sparse for the multivariate analysis I'm trying to run. I'm wondering if I should actually be using 3dSynthesize to pull out the regressors of no interest and then subtracting that from my all_runs file using 3dcalc. I really want to do minimal pre-processing on these data for the multivariate analysis, so it'd be helpful to basically have the all_runs data with just the WMe and SVent mean time series regressed out (and possibly motion params). Would 3dSynthesize be the best way to do this or would you suggest something else?
Thanks,
Laura