[FieldTrip] dbs artifact

Chaitanya Srinivas chaitanya.pro at gmail.com
Mon Dec 16 19:58:57 CET 2013

In MEG, there are two methods which deal with suppression of DBS artifacts.
The tSSS method is used for Elekta Neuromag MEG system for removing DBS
artifacts. I came to know that the authors also made a software called
MaxFilter for the same manufacturer.

The other method is called Spectral Signal Space separation where authors
claim to have better performance than tSSS.

I have tried 4 methods in removing the artifacts in EEG including the one
Alik mentions and this performed poorly. Feel free to contact me if you
need anything more.


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*Best Regards*

*Chaitanya Srinivas Lanka Wiss. Mitarbeiter

*PhD StudentFunctional and Restorative Neurosurgery Neural Information
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On Mon, Dec 16, 2013 at 7:38 PM, Alik Widge <alik.widge at gmail.com> wrote:

> I can't tell you about MEG, but here's a method for EEG:
> http://dx.doi.org/10.1016/j.clinph.2010.02.156
> We are playing around right now with questions of source localization and
> whether it might be possible to clearly localize the DBS to its subcortical
> source. Ask me in three months.
> If you have any capacity to request things of your subjects' neurologists,
> there are some papers in the literature suggesting that artifact is weaker
> in a bipolar configuration compared to  monopolar. Again, EEG only. Here at
> Martinos the only recommendation I've heard about DBS+MEG is "doesn't work
> well". I don't know of anyone who's really studied the problem.
> Alik Widge
> alik.widge at gmail.com
> (206) 866-5435
> On Mon, Dec 16, 2013 at 12:35 PM, Raghavan Gopalakrishnan <
> gopalar.ccf at gmail.com> wrote:
>> Is there some experience around in fieldtrip community on ways to deal
>> with dbs artifact in MEG data? Are there plans of including such artifact
>> rejection routines in FT?
>> Thanks very much.
>>  Raghavan
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