We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:
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The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.
> What is the difference between using "-adiff 1 2" and usinf "-acontr 1 –1" in 3dANOVA2?
> I do not obtain the same activations when I use -adiff and -acontr. The activations are
> bigger (higher intensity) in -acontr than in -adiff. What is the reason for this difference?
That seems strange. Are the t-values the same? Could you provide the output of the following command?