Hi all,
I have trouble defining contrast tests in SPM2. For example, when I run a one-sample t test, after I specify a t-contrast on the SPM contrast manager by typing "1" in the window of "contrast weights vector" and click "... submit", there is no response. And at the bottom of the manager window, it says "name defined, contrast not defined".
If I switch to F-contrast, it still doesn't work if I specify a "1" in the "contrast weights matrix" window. Only if I define the contrast by typing 0 in the "columns to reduced desig" window can I get the contrast successfully defined.
The same troulbe also occured when I was running contrasts for individual subject analysis. Why is this?
Many thanks,
Gang
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