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in the FSL web page this is well explained

in randomise the p and corrp images are (1-p)
so the threshold is 0.95 or 0.99

Angela

> Hello-
>
> sorry for the simplistic question in advance.
>
> I have DTI images for two groups of individuals with two visits each. I
> successfully ran TBSS and made a paired design matrix in Glm_gui. I used
> randomize to make the group comparisons. I guess I don't quite understand
> the output file. I have zstatn.nii.gz outputs for each of my n contrasts.
> When I open those files in fslview it appears they are not thresholded.
> How
> do I threshold these zstat files if I want to look at p values of .01 and
> and .05?
>
> Thanks for all your help!
>