Dear SPMers and PPI experts,
I am running a gPPI analysis (using the gPPPI toolbox) to contrast the contribution of my seed regions in four conditions. In my 1st level design I include six conditions (four critical + 2 of no interest) plus the motion parameters as regressors. I defined the field "task" as follow: Inputs.Tasks = { '1' 'G-NC' 'G-C' 'S-NC' 'S-C'}, including only the four critical conditions.
Is this approach correct or should I include the PPIs for all conditions included in the design?
Best regard,
Ileana
Ileana QuiƱones
Predoctoral researcher
www.bcbl.eu
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