[Mne_analysis] Baseline correction/z scoring for signed MNE stc data

[Alexandre Gramfort]

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hi Dip,

sorry for the late reply.

If STC contains signed values they should be zero mean during baseline so
no centering should be needed. Regarding scaling it depends on the stat
you use. If you use a t-test it estimates the standard deviation so apply
a scaling factor should not have any effect of the T-stats.

HTH
Alex


On Wed, Sep 30, 2020 at 11:48 AM Diptyajit Das <bmedasdiptyajit at gmail.com>
wrote:

>         External Email - Use Caution
>
> Dear MNE users,
>
> I would like to compute some statistics on different conditions using the
> Spatio-temporal clustering method implemented in MNE. I would like to use
> the signed MNE values as STC data. I was thinking, if I need to do any sort
> of normalization (i.e., a baseline correction or z scoring over the
> conditions) before doing the statistics. Any feedback would be helpful.
>
>
> Thanks and best,
> Dip
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