Hi
You need an F-test.
Do four simple contrasts: [1 0 0 0], [0 1 0 0], [0 0 1 0], and [0 0 0
1] , and then do an F-test across all 4.
Cheers
T
On 21 Jun 2007, at 01:32, Junghee Lee wrote:
> Hello Everyone,
>
> I have four conditions in my task and I would like to find areas
> that activation for condition A or B or C, or D. I believe this is
> different from the mean (A,B,C, and D) and I can't figure out what
> would be the best way to do that.
>
> Can I do four simple contrasts [1 0 0 0], [0 1 0 0], [0 0 1 0], and
> [0 0 0 1] and threshold them at some level and add them together to
> get regions where A or B or C or D activated? Or is this not correct?
>
> Thanks,
> Junghee
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