Hi Cleo,
See the following page created by Jeanette Mumford for a helpful
exposition of how mean centering affects your data:
http://mumford.fmripower.org/mean_centering/
As for your DOSS model, there is a "bug" in how QDEC describes the
contrasts in that case. See the following posts:
http://
Hi Freesurfers,
I’ve been using freesurfer5, qdec 1.4 and I have some questions about it.
1-I’ve used age as a nuisance variable in my analysis (DODS). When I use
demeaned age I obtain a different result if I use ‘real’ age value, which is
your the recommendation?
2-When I use DOSS model, which
