[FieldTrip] Apply new ref to selected chans only

[Stephen Whitmarsh]

Dear Christine,

If you want to keep your 'unreferenced' or rather 'pre-rereferenced'
channels, you could just add them from the state before re-referencing. Or
preprocess a set of channels separately and concatinate them later. Note
sure *why *you would like to do that though as you would be ending up with
channels with different referencing schemes. In any case, per default you
lose your reference channels, as they will (average to) zeros anyway.

Also see:

   cfg.implicitref   = 'label' or empty, add the implicit EEG
reference as zeros (default = [])

Hope this helps,

Stephen

On Mon, 15 Jul 2019 at 15:35, Blume Christine <christine.blume at sbg.ac.at>
wrote:

> Dear FieldTrippers,
>
> I am asking myself (& the code, both without success) whether
>
> i) the new reference in ft_preprocessing is also applied to the original
> reference channels (which in the case of linked mastoids is not desirable)
> and if that is the case, ii) whether the code allows to only apply the new
> ref to specific channels only. Any ideas are appreciated!
>
> Best,
> Christine
>
> Sent from my iPhone
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> https://doi.org/10.1371/journal.pcbi.1002202
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