Hi Dane,
I wanted the 3dinfo output from the dataset that you were
showing, which I guess is the third one. But I actually
expected it to be the output from 3dttest++. You mention
doing a Z->R conversion after 3dttest++, and since that
label has not changed, the conversion was presumably done
on sub-brick 0 from the 3dttest++ result, is that correct?
So you converted the mean z-score from the group test back
to R, which is okay.
But group-level significance thresholding should not come
from that volume, but more likely from sub-brick #1 (from
the 3dttest++ result), the actual t-stat from the main test.
The average group value (Z or R in this case) does not show
group-level significance, and therefore does not provide a
p-value (at the group level).
- rick
