[Mne_analysis] Problem reading competition data

[Alexandre Gramfort]

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> I want to reduce the dimensionality of the data and the lead-fields
> and do beamforming in this reduced space.  How would you normally do
> beamforming on MaxFiltered data in this case?

I would use empty room data or prestim on which I had run Maxfilter
to get a noise cov and it would go fine.

> Would you use the
> pre-seizure part to compute noise covariance?

I don't have enough experience to argue here. I don't know
what to do precisely here given the data we have access to.

Alex