Dear SPMers
I'm dealing with a fMRI experiment with only 1 group of subjects and three conditions. I am interested in revealing differences between these 3 conditions. My idea was setting up a f-test in 1st level with the following contrast matrix...
1 0 0
0 0 0
0 0 -1
Then i realized that I don't get any contrast map or usable output by an f-test in 1st level, so I considered a f-test in 2nd level based on the resulting contrast maps for each condition output by 1st level. Since I am quite unsure of modeling it properly, I would appreciate any kind of clue how to solve this problem, particularly in 2nd level.
Best,
Laurens
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