Let's say I have two statistical briks, output from 3dttest for
example. How can I combine them? Assume they are the same size, and
so on. I'd like to get an idea of which areas are activated in common
between the two. The means (subbrik 0) may not be of the same order
of magnitude, and can be positive or nagative. I suppose I could just
multiply them, or something. As for the statistic, do I convert from
t to z or something using 3dcalc? Can I make a mask from the
thresholded stat?
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