[Mne_analysis] Get back a reference channel from acticap

[Brunner, Clemens (clemens.brunner@uni-graz.at)]

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Hi!


> So in order to be clear in getting back FCz, referencing to average and then 
> reducing dimensionality:
> 
> - first I add back FCz as a zeros channel;

Yes.

> - I compute the mean of each other channel and I substract 0 to this mean 
> for FCz;

I'd say you compute the mean of all channels (which now include FCz).

> - I then compute the average reference (will be rank deficient);

Yes.

> - I use the function mne.preprocessing.ICA specifying that 
> I want max_pca_components and n_pca_components to be equal to my number of 
> channel minus 1.

Yes.

Clemens