I have downloaded extracted time courses using automated anatomical labeling (AAL) using this link (http://www.nitrc.org/plugins/mwiki/index...).
Some of the subjects from NYU dataset have more than one session (two sessions for filtered and two for unfiltered) and others have only one (one for filtered and one for unfiltered). 
I am wondering if I should use only one session or all of them for subjects with more than one session for filtered and unfiltered.

Thanks