Thanks Rick!

This made me think of a follow up question related to the relationship between 3dDeconvolve and 3dTproject:

When running a typical resting state pre-processing with Anaticor the X-matrix is generated by 3dD usually with a polort of 2 or 3. I.e. the X.mat contains these drift regressors.

But when running the 3dTproject command with this X.mat (and anaticor regressors) the polort option is set to (in the proc) to -polort 0. Would this not mean that two 0th order regeressors are used? One from the X.mat and one from the option in 3dTproject?

We are running some stand alone regressions and want to clean volreg data with anaticor and were confused when it came to the -polort settings on these two functions. It would feel best if one had e.g. -polort 3 and the other -1 (off).

Thanks!