I have a question regarding conjunction analyses in SPM. I want to know how
to do the conjunction analysis by myself (matlab code), not using the SPM
software.
The question is : I have two task comparisons ( contrast A and B) and would
like to identify voxels activating conjointly by both. As I have sevral subjects,
say 2, my model is like:
sub 1 contrast A 1 0
sub 2 contrast A 1 0 beta A
sub 1 contrast B = 0 1 * beta B + error
sub 2 contrast B 0 1
So beta A is for contrast A in the group and beta B is contrast B in the group.
I want to know that, after this model, how can I get the result for conjunction
result ,like t and p value? I read the spm script which is too hard for me to
extract useful information, I would be very grateful for suggestions how to do
it.
Thanks!
|