[Mne_analysis] single trial artifact rejection

Alexandre Gramfort gramfort at nmr.mgh.harvard.edu
Tue Jul 19 19:00:10 EDT 2011
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Hello Jonathan,

the problem with what you described it that you're going to create
edge artifacts around the time segments you remove. You mention
single trial analysis but do you mean more "on going" data? Do you
have the notion of trial with triggers? Can you be more specific about
what you want to do?


On Tue, Jul 19, 2011 at 3:31 PM, Jonathan McDaniel <jonmcd33 at hotmail.com> wrote:
> Hello all,
> I would like to do a single trial artifact rejection in the MNE stream by
> removing time windows of data containing artifacts, as opposed to performing
> an ICA correction.  One way of doing this seems to be to read the raw.fif
> file into matlab, perform a threshold detection, remove a time window about
> the detected events, and then write the data back out as a .fif file for the
> remaining analysis.  Is there a simpler, more builtin way to do this?  I
> know that for an evoked paradigm, you could specify certain criteria in the
> average file, and it would reject a trial not fitting those criteria.
>  However, as this is a single trial analysis, I don't want to average and
> thus it seems I can't make use of this step.
> Any help is much appreciated.
> Thanks,
> Jonathan
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