9 Apr
2008
9 Apr
'08
3:40 p.m.
Hello, I would like to know how to examine an interaction between continuous variables. In SPM, my understanding is that a new interaction regressor, comprised of the product of the two continuous variables of interest, can be coded and entered into the model. Would this be appropriate for CTA group analysis in FreeSurfer? Is there any difference if I use the old command line method or the QDEC GUI? Thanks, - Jerry