Thanks, this was the mistake. But then I get
Error in linearHypothesis.mlm(mod, hyp.matrix, SSPE = SSPE, ...) :
The error SSP matrix is apparently of deficient rank = 0 < 7
Calls: Anova ... Anova.III.mlm -> linearHypothesis -> linearHypothesis.mlm
Execution halted
I thoughts its because I have too few subjects, but even with 14 subjects the error remains...
EDIT: As you said, 3dANOVA seems to be quite sufficient for my case, I think I'll stick to that.
Also it would be nice to somehow use 3dMEMA, because I am sure not every parameter of the HRF model is equally reliable/important.
Edited 3 time(s). Last edit at 01/14/2014 08:24AM by paranoidandroid.