Thanks Donald, it is more clear now. I have several more doubts regarding F-contrasts and the extraction of time series:
1. Does it make sense to pass F-contrasts from first-level models to second-level models in a similar way as t-contrasts?
2. When extracting time series with the VOI toolbox, why is the time series from session 2 (or 3) corrected by setting an F-contrast only referring to session 1?
3. When extracting time series with the VOI toolbox, what is the meaning of "Adjust for everything"? I expected a noise signal but it was not the case.
Kindest regards,
Antonio