Dear all,
I have a question about specifying the contrast in single-subject
multisession data.
Due to the scanner issue I'd to break a single run into two sessions. I'd
read many older messages and found the suggestion is to treat them
separately as two sessions, and not to pool them together as a single run. I
tried with SPM5 by choosing:
Specify 1st-level => Data&design => New Subject/Session (add twice) => ...
and specify the scans
When specifying the contrast, should one use [1 1 0 0 ] or [1 -1 0 0 ]?
Or should I use "Specify 2nd-level " instead?
p.s. The design matrices look like these (.jpg).
Any suggestions are appreciated
Cheers,
Stacy
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