Dear experts,
I REALLY need some advises for my fMRI study based on a regression analysis with two scalar variables and 20 pathological subjects.
From what I understand, SPM multiple regression tests the interaction between one covariate and the fMRI data correcting for the other one. I need to test also the interaction among the clinical scores on the fMRI data: how can I do? Can I set a F-test on the regression matrix to do that or do I need to set a new, special ANOVA test?
Thanks in advance for any help!
Chiara
|