[Mne_analysis] noise regularization in group analysis

Alexandre Gramfort alexandre.gramfort at telecom-paristech.fr
Mon Oct 24 09:18:24 EDT 2016
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Hi,

> I have a naive questions about noise covariance matrix regularization.
>
> For the group analysis, should the same noise covariance regularization (e.g
> 'shrunk')  be applied to all the subjects or would it be better to apply
> regularization that is  'optimal' ('auto' option in the
> mne.compute_covariance) for each particular subject ?

To me "optimal" is recommended but I am curious if you see any
impact of "optimal" vs. "all shrunk" on the group results.

Alex


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