Dear SPM experts,
I am conducting a longitudinal event-related study (condition HAND GRIP) in 3 sessions with time- and disp. derivatives and movements.
Each session specific contrast (EoI x) is modelled as F contrast, only for the particular session (e.g. "1" for EoI 1 session 1).
For DCM analysis, I'd like to extract the time series session-specifically with the correct adjustment.
Am I right when I
- load the session-specific F contrast (gives valid activation patterns)
- VOI extraction with
- adjust data to effects of "no" interests (F contrast 1 / 9x0 1 / 18x0 1 across all 3 individual EoIs!)
- which session?: specific session 1 / 2 or 3 is selected
Or do I have to adjust the data simply to the specific EoI x (the one which is actually used as the contrast for the specific session)?
Any help in regard of this adjustment problem is highly appreciated.
Thank you in advance!
Best, Robert
|