[Mne_analysis] howto convert ICA components to SSP projection operators.

Alexandre Gramfort alexandre.gramfort at inria.fr
Wed Aug 16 12:53:07 EDT 2017
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Hi Luke,

we don't have such a function AFAIK and I see a use to it. My first
reaction was to tall you to use a high n_pca_components in ICA but
it's not fully equivalent to an SSP.

proj = make_ica_proj(ica, picks)

?

Alex

On Wed, Aug 16, 2017 at 3:50 PM, Luke Bloy <luke.bloy at gmail.com> wrote:
> Before I potentially reinvent a wheel, I was wondering if there was a way to
> compute an ssp projection operator (proj) from the excluded basis set of an
> ICA operator.
>
> The reason I'm trying to do this is that I have some data that has an
> environmental artifact that is always around 4HZ but whose topology changes
> slightly from subject to subject. ICA on a filtered dataset (3.5-4.5Hz)
> makes it easy to ID the artifact components but the remaining ICA components
> are not really applicable to the broadband signal so using ica.apply() on
> the boradband signal doesn't really work for me.
>
> Thanks
> Luke
>
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