[Mne_analysis] Artifact rejection on select channels

[Mainak Jas]

Hi Ghislaine,

You can select the subset of channels using pick_channels and use it for
artifact rejection. In the end, you could combine the data in the modified
channels and the original channels by concatenating them in numpy and by
using EpochsArray. It will require a few lines of python code. Something
along the lines of:

>>> epochs_subset = epochs.copy().pick_channels(...)
>>> # run artifact rejection
>>> X_clean = epochs_subset.get_data()
>>> X_rest = epochs.pick_channels(...).get_data()  # pick the rest of the
channels
>>> epochs = EpochsArray(np.concatenate((X_clean, X_rest), axis=0),
epochs.info)

I'm sure it doesn't work out of the box, so you may have to change the
code. Don't hesitate to let us know if you get stuck at any point.

Mainak

On Wed, Mar 1, 2017 at 2:40 PM, Ghislain d'Entremont <
ghislaindentremont at gmail.com> wrote:

> Hi,
>
> I want to run artifact rejection on a specific subset of channels without
> modifying my epoch object otherwise (i.e. the other channels).
>
> Thanks,
>
> *Ghislain d'Entremont*
> BSc, Neuroscience, Honors
> Dalhousie University
> tel: 902-802-5671 <(902)%20802-5671> (text)
>
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