> It works great now.
Thanks for the update!
> Unfortunately I seem to have too few subjects for multivariate analysis (I still dont
> quite get how degrees of freedom are obtained), eventually I would have 4 groups
> with ~6 subjects each.
The requirement for the sample size is
n > m + q
where n is total number subjects, m is the total number of level combinations among within-subject factors, and q is the number of between-subjects explanatory variables. In your case, m = 7, q = 4; so, n should be at least 12. That is, 4 groups with ~6 subjects each should be fine.
> However, I am getting excellent group results with 3dMEMA, it seems the incoroporation
> of the t-maps helps a lot with small groups...
Good to know! Did you run 3dMEMA on each parameter separately?
Gang