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Statistics in imaging is no different than statistics in any other field.

If you would do a paired t-test on behavior, then you'd do a paired t-test on the images.

In your case, you have 2 conditions. You'd use a paired t-test to evaluate the difference between conditions.

Best Regards, Donald McLaren
=================
D.G. McLaren, Ph.D.
Postdoctoral Research Fellow, GRECC, Bedford VA
Research Fellow, Department of Neurology, Massachusetts General Hospital and
Harvard Medical School
Office: (773) 406-2464
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On Mon, Dec 5, 2011 at 6:10 AM, SUBSCRIBE SPM Anonymous <[log in to unmask]> wrote:
Dear SPMers,

(Please forgive me my english...)

I'm currently analyzing fMRI datas but I'm just a little confused about the 2nd level that I have to do.
In my experiment, there is one group and two experimental conditions that I want to compare. My first idea was to perform a paired t test with condition 1 vs baseline and condition 2 vs baseline (from 1st lvl)

But I don't know if this statistical test is relevant in this case...

Could you help me...?

Thx