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I'm afraid it is, yes… people either use seed-based correlation, or ICA, mostly - see the resting-state literature. Cheers. On 29 Mar 2013, at 15:37, Shan(Hannah) Luo wrote: > Thanks Stephen. This question might be silly. Since I have a resting-state data with no experimental condition, what should I do for my GLM? > > > On Fri, Mar 29, 2013 at 2:51 AM, Stephen Smith <[log in to unmask]> wrote: > Hi - for resting state, given that you don't have a model, you should use the other approach - > "subtraction of tag from control (as part of pre-stats processing)" > as described at the top of that web page. > > Cheers > > > > > On 25 Mar 2013, at 16:59, Shan(Hannah) Luo wrote: > >> Dear FSL experts, >> >> I am trying to figure out how to analyze some resting-state ASL data. I followed instruction from FSL website using full perfusion signal model: http://fsl.fmrib.ox.ac.uk/fsl/fsl4.0/feat5/perfusion.html >> >> I'm wondering whether I need to include EV3 ( interaction EV) in my model. My dataset is all resting-state ASL. I would appreciate if you could generously offer some help. Thanks ahead of time. > > > --------------------------------------------------------------------------- > Stephen M. Smith, Professor of Biomedical Engineering > Associate Director, Oxford University FMRIB Centre > > FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK > +44 (0) 1865 222726 (fax 222717) 2176 > [log in to unmask] http://www.fmrib.ox.ac.uk/~steve > --------------------------------------------------------------------------- > > > > --------------------------------------------------------------------------- Stephen M. Smith, Professor of Biomedical Engineering Associate Director, Oxford University FMRIB Centre FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK +44 (0) 1865 222726 (fax 222717) [log in to unmask] http://www.fmrib.ox.ac.uk/~steve ---------------------------------------------------------------------------