Dear Zheng,
>
>Dear SPM experts,
>
>I am comparing two groups of SPECT scans: depressed and
>normal (10 subjects each and one scan per subject). I used
> "compare groups: one scan per subject" design with two contrasts
>1 -1 and -1 1.
>
>Can I say that the SPM{Z} map for contrast 1 -1 represents the
>increased activity whilst that for contrast -1 1 represents
>decreased activity for depressed patients in comparison with the
>normal controls?
If you selected the files representing the depressed subjects for the first
group, Yes.
Good luck Jesper
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