Hi ,
Ive a group of subjects that were scanned pre and post treatment. I used default flobs for the 1st level model setup, giving me 3 contrasts for each subject. I then passed on these 3 copes to a higher level analysis for 'pre-treatment' group mean and did a F-test across the 3 copes. I did the same for post-treatment group mean. I saw activation in expected areas. When i compared the two zFstats visually, i found that Post-treatment group mean had more activated voxels and higher z-scores compared to pre-treatment. I then ran a paired t-test using only Cope1 and i got the opposite results i.e significant areas where pre>post. Im not really sure how i can interpret this. Any ideas?
FYI: This is like a Go/NoGo task and the above results are for NoGo condition.
Cheers,
Vish
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