Hi, Doug. Many thanks.

Find the fsgd and the contrast attached, as well as the cluster summary and the individual-based cluster data (which I used to calculate the groups' means). The cluster I referred to is the second one (medialorbitofrontal).

I investigated differences in cortical area from groups 1 and 2 in contrast to groups 3 and 4 (contrast 3 as in https://surfer.nmr.mgh.harvard.edu/fswiki/Fsgdf4G1V).

Best,

Pedro Rosa.

On Mon, May 14, 2018 at 5:42 PM, Douglas N. Greve <dgreve@mgh.harvard.edu> wrote:

Can you send your fsgd file and contrasts?

On 05/14/2018 01:25 PM, Pedro Rosa wrote:
>
>
> Dear FreeSurfers,
> I got results from a cortical area analysis that intrigued me: Upon
> the inspection of clusters that survived Monte-Carlo simulation, I
> found a cluster with larger area among a first group in contrast to a
> second group.
> However, when I calculated the cortical areas means from that cluster
> (as available in the glmdir), the second group had values slightly
> larger than the first group (i.e., showing a difference in the
> opposite direction).
> How would you explain such findings? Must I have committed a mistake
> in the analysis or its interpretation?
> Best,
> Pedro Rosa - University of São Paulo - Brazil.
>
>

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