afni.nimh.nih.gov

[afni.nimh.nih.gov]

I was not aware of this when I formatted my timing files but it seems like AFNI will center my auxiliary data (RT) for me. I have centered my RT's to the mean for each run. Before I stop centering my data myself and let AFNI handle that job I would like to know if AFNI centers to the run mean or the grand mean (across runs). What mean does AFNI use? It seems like I will have to change AFNI_3dDeconvolve_rawAM2 if AFNI centers across runs.