On 1st level, conjunction analysis is done by highlighting two contrasts in the
results part. But I have problem with doing conjunction analysis on the 2nd
level as there is no new con files generated from the 1st level for the
conjunction.
My case is like this:
on 1st level, I have the con files of : A1-A2 ; B1-B2 for each subject
on 2nd level, I want to do conjunction of : A1-A2 Vs B1-B2 for all subjects
Since on 2nd level the con files of A1-A2, B1-B2 are at different folders after
doing 1-sample t-tests of the constrasts, I couldn't select the two contrast
simultaneously.
I've also tried to use paired sample t-test with con files of A1-A2 & B1-B2, but
the error message appeared : "There is no significant voxels" and the
estimation process stopped.
Could anyone tell me how to perform conjunction analysis at the 2nd level?
Thanks a lot!
Tiffany
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