Hello All,
I just want to be absolutely positive about what I am seeing so I
ask the following question.
First what I have.
Two sessions, lets call them A and B. Hypothesis is that A and B contain
the same fundamental
cognitive components but B has another cognitive
component of
interest.
Both sessions are 32 second blocks of
off on off on off
A conjunction of the two main effects ( contrasts being: [1 0] and [0 1])
would show activation the two have in common, correct?
How would I see activation that occurs in B and NOT in A?
Is that the contrast [-1 1]?
If not what exactly does [-1 1] show?
Thank you very much,
Jason.
Jason R. Steffener, RTSV
Department of Psychiatry, University Hospital, UMDNJ
Office: (973) 972-1604
http://www.umdnj.edu/~steffejr/jason.html
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