Hi all,
If I have 1st and 2nd order contrast images obtained from group of 10 subjects (i.e. I have 10 1st order contrast images and 10 2nd order contrast images).
Option one: I can perform second level analyses on each order by using a one sample t -test.
Option two : Which I am not sure how to do it : is I would like to use the F contrast on both orders at the "group level" or inside defined ROIs of each order. So the result is an image that contains the effects from both group. How can I do this in SPM? I know it might be wrong, but I tried the following: I took all the 20 con images, inserted them in the one sample t test and used the F test. From the result I think this might be wrong.
So simply is there any way of using F test at the group level for two different group of con images ?
NB: To make it simple, I mentioned that two different groups but in fact I have more than three.
Many thanks
Aser
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