[Mne_analysis] remove heat beats artifacts using SSP

[Lin Wang]

Hi Alex,

I used 'all_epochs.append(epochs)' to concatenate all epochs of different
runs, as shown in the Biomag demo data (
http://mne-tools.github.io/mne-biomag-group-demo/auto_scripts/05-make_epochs.html#sphx-glr-auto-scripts-05-make-epochs-py
).

However, I got an error because I calculated SSP separately for different
runs, and the error is caused by the different projections obtained from
different runs.

Thanks for your help!

Lin

On Thu, Nov 17, 2016 at 4:11 AM, Alexandre Gramfort <
alexandre.gramfort at telecom-paristech.fr> wrote:

> please read the doc...
>
> to concatenate Epochs use:
>
> http://martinos.org/mne/stable/generated/mne.concatenate_epochs.html#mne.
> concatenate_epochs
>
> don't pass Epochs to a function that is called concatenate_raws...
>
> A
>
> On Wed, Nov 16, 2016 at 3:19 PM, Lin Wang <wanglinsisi at gmail.com> wrote:
> > Hi Alex,
> >
> > Thanks for your reply.
> >
> > Do you mean to treat the epochs as raw data and use
> 'mne.concatenate_raws'
> > to concatenate them? If I do that, I got this error: 'Epochs' object has
> no
> > attribute 'append'.
> >
> > Or did I misunderstand anything here?
> >
> > Thanks!
> > Lin
> >
> > On Wed, Nov 16, 2016 at 2:46 AM, Alexandre Gramfort
> > <alexandre.gramfort at telecom-paristech.fr> wrote:
> >>
> >> hi Lin,
> >>
> >> > I would like to use SSP to remove heart beats artifacts. After
> >> > calculating
> >> > the projections separately for different runs within one subject, I
> >> > tried to
> >> > epoch the data and then combine the epochs from different runs based
> on
> >> > their conditions. Then I got an error message showing that I have to
> use
> >> > the
> >> > same projections when combining them together.
> >> >
> >> > My first question is: how can I calculate the ERFs of each subject
> with
> >> > all
> >> > the runs combined?
> >>
> >>
> >> http://martinos.org/mne/stable/generated/mne.concatenate_raws.html#mne.
> concatenate_raws
> >>
> >> > I'd also like to remove the epochs that are contaminated by eye
> blinks.
> >>
> >> use reject parameter in Epochs
> >>
> >> > Then
> >> > the second question is: Should I do the SSP first or should I remove
> the
> >> > EOG
> >> > artifacts first?
> >>
> >> remove the EOG artifacts first.
> >>
> >> HTH
> >> Alex
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