[Mne_analysis] sign of the T-values in permutation_cluster_test

[Eric Larson]

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What `stat_fun` are you using? The default (f_oneway / ANOVA) will always
give a positive F value. Maybe you want to use `ttest_ind_no_p` that was
recently added here?

https://github.com/mne-tools/mne-python/pull/7686

Eric



On Thu, May 7, 2020 at 11:10 AM Fleur GAUDFERNAU <
fleur.gaudfernau at pasteur.fr> wrote:

>         External Email - Use Caution
>
> Dear MNE community,
>
> I'm using permutation_cluster_test for 2 sample cluster-based tests. I'm
> quite surprised because I always get positive T-values, even when I expect
> negative ones. Reversing the order of the 2 arrays (one for each group)
> yields exactly the same result. Is this normal ?
>
>
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