Question about Preprocessing

[Ingrid Nieuwenhuis]

Dear Lee,

 

I don’t know about the cfg.removemcg, it is an undocumented option, so it
might be that this option which is not supported fully in the external
FieldTrip version.

 

What you can do is use independent component analysis to remove ecg
artifacts. See the FieldTrip wiki internet page
(http://www2.ru.nl/fcdonders/fieldtrip) under “example matlab scripts” go
to  “Use independent component analysis (ICA) to remove ECG artifacts”

 

Good luck,

Ingrid

 

  _____  

From: FieldTrip discussion list [mailto:FIELDTRIP at NIC.SURFNET.NL] On Behalf
Of ???
Sent: Tuesday, September 02, 2008 10:17 AM
To: FIELDTRIP at NIC.SURFNET.NL
Subject: [FIELDTRIP] Question about Preprocessing

 

Hi,

 

I have a problem in "preprocessing". It seems that the option
"cfg.removemcg"  has no effect in removing mcg. 

As descriped in the function "preprocessing":

 

  if strcmp(cfg.removemcg, 'yes')
    cfg = template_mcg(cfg);
    mcgchannel = channelselection(cfg.artfctdef.mcg.channel, hdr.label);
    mcgindx    = match_str(cfg.channel, mcgchannel);
    for i=1:length(mcgchannel)
      fprintf('removing mcg on channel %s\n', mcgchannel{i});
    end
  end

But there is no such "template_mcg" in the toolbox.

 

Do you have any suggestion on removing the ECG artifacts?

Thanks!

 

 

 
Lee

  

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The aim of this list is to facilitate the discussion between users of the
FieldTrip toolbox, to share experiences and to discuss new ideas for MEG and
EEG analysis.

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----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/fcdonders/fieldtrip.
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