Hi everybody!
I'm trying to do a 2*2 ANOVA with one between subject factor (group) and one whithin subject factor (time) with resting-ICA data.
I'm writing because I have doubts with the analysis I should do.
I tried to:
1) put all the sessions altogether and extract the components
2) do dual_regression with all the sessions and all the subjects in order to extract the individual ICs for each session.
3) I did a substraction in order to get the within subject differences for each subject (subj1_ICofInterestX_pre - subj1_ICofInterest_X_post ... aubjn_ICofInterestX_pre - subjn_ICofInterestX_post)
4) I run a randomise accounting for the between subject variable (group) and other covariables.
I want to ask if:
a) is this analysis right? In case is wrong which is the correct way to perform such analysis
b) if I want to get group effect and not interaction effect (I only should promediate subjects images instead of substracting them?)
c) which images should I used in order to do the substraction? the dr_stage2_ic...nii.gz or the dr_stage2_ic...Z.nii.gz (That was posted some time ago but was unsolved)
thanks in advance
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