Hello there fellow FSL users
I have 20 subjects. Each subject underwent fMRI on three separate occasions
(smoking abstinence; 0.1mg nicotine; 1.2mg nicotine).
I wish to test the differences between these three sessions. This, I
understand, is really a repeated measures design.
The six contrasts I want to look at are:
smoking abstinence>0.1mg nicotine
smoking abstinence>1.2mg nicotine
0.1mg nicotine>smoking abstinence
0.1mg nicotine>1.2mg nicotine
1.2mg nicotine>smoking abstinence
1.2mg nicotine>0.1mg nicotine
What would be best way to perform these ananyses in FSL? I know a simple
paired ttest in FSL will let me perform these six contrasts in three
separate analyses. Would this be potentially erroneous and is there a better
way of looking at the above contrasts?
Thanks in advance.
Liam.
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