Dear Donald and others,
I am using gPPI with an event-related design (modified Flanker task, including ‘Congruent’, ‘Incongruent’, NoGo’, and ’Neutral’ conditions), and was wondering how to build the final PPI contrast for the 'Nogo’ condition? I am also wondering what will be the best option to analyse brain activation for this condition.
Does it need to be contrasted with say the ‘Congruent’ condition, or can if I leave it alone, will it be contrasted against the implicit baseline? Or am I totally wrong, and there is a 3rd option? Depending of the paper I read I can find both option for brain activation analyses.
Thanks for your help.
Best,
Yann
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