Thanks. Looks like I will have to dump all my results done with mc-z!
Unfortunately the Freesurfer Wiki is mute on the use of permutation, unless there is some tutorial I haven't found.
How many permutations should one run?
Any other helpful hints?
Cheers.......J
On Mon Oct 11 9:05 , "Michael Harms"
Hi Jay,
Permutation testing will give the most accurate results.
cheers,
-MH
> Hi Experts,
>
> Which option is best to use: mc-z or perm?
> I have read that perm gives more accurate results than mc-z, as it uses
> the actual data rather than fake data to estimate the null distribution.
> When I use perm, I get no significant clusters.
> When I use mc-z, almost all clusters are significant.
>
> Thanks......J_______________________________________________
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