afni.nimh.nih.gov

I am interested in the autocorrelation itself (as an end product so to speak). For example, I am interested at what TR (or seconds) the autocorrelation reaches or drops below 0 (first zero crossing).

How would you measure that, generally speaking? Options:
1. No motion censoring in AFNI, hence no interpolation.
2. Motion censoring in AFNI, then some kind of interpolation.
3. Motion censoring in AFNI, but no interpolation (leaving the censored TRs as zeros).