[Mne_analysis] ICA fit on raw data with projections

[Diptyajit Das]

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Yes, it does. Thanks!


On Sat, Dec 14, 2019 at 1:32 AM Alexandre Gramfort <
alexandre.gramfort at inria.fr> wrote:

>         External Email - Use Caution
>
> hi Dip,
>
> you have a discussion in the notes section of ICA doc:
>
> https://mne.tools/stable/generated/mne.preprocessing.ICA.html
>
> does it answer your question?
>
> Alex
>
>
> On Fri, Dec 13, 2019 at 1:28 PM Diptyajit Das <bmedasdiptyajit at gmail.com>
> wrote:
>
>>         External Email - Use Caution
>>
>> Dear all,
>>
>> I create noise projections from meg raw data to remove environmental
>> artifacts (i.e., street car effects). I usually apply the projections to
>> the data and then perform a ICA fit to remove other biological artifacts
>> (i.e., ecg, eog). It seems like noise projections that are applied to the
>> data are temporarily removed while fitting the ICA object to it. I can see
>> that since the topographies of the noise projections are being replicated
>> in ICA topographies. Is it true that even if the projections are applied to
>> raw data before, they are kept separated while performing ICA fiting and
>> added afterwards again? Can anyone tell me how it works in MNE?
>>
>> Best,
>> Dip
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