Hi Bob,
Thanks for the quick response.
I would object to a large polynomial for the reasons outlined here (http://afni.nimh.nih.gov/afni/community/board/read.php?f=1&i=30675&t=30658; see Rick's associated response). However, at least objection 1 might be mitigated by the fact that there are so many time points acquired in such a long run.
Anthony