Hi Ajay,
I am suggesting to use pb04.$subj.r*.blur+orig.HEAD,
which afni_proc.py will demonstrate using the option
-regress_est_blur_epits.
Unfortunately, I still have not put the acf options
in afni_proc.py for those estimations, but you can
add that option.
In any case, yes, use -detrend, and do it one run
at a time.
- rick
