<div dir="ltr"><div><div><div>In MEG, there are two methods which deal with suppression of DBS artifacts. <br></div>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.<br>
<a href="http://www.sciencedirect.com/science/article/pii/S0531513107001422">http://www.sciencedirect.com/science/article/pii/S0531513107001422</a><br><br></div>The other method is called Spectral Signal Space separation where authors claim to have better performance than tSSS.<br>
<a href="http://www.sciencedirect.com/science/article/pii/S105381191100139X">http://www.sciencedirect.com/science/article/pii/S105381191100139X</a><br><br><br></div>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.<br>
<div class="gmail_extra"><br clear="all"><div><div dir="ltr"><font face="arial, sans-serif"><div><b><div style="color:rgb(0,0,153)"><font color="#000099">===============================================</font></div></b><br>
<b><img alt="Inline image 1" src="cid:ii_13f6c73ea79c7353"><br><br></b></div></font><font face="arial, sans-serif"><div><b>Best Regards</b></div></font><font face="arial, sans-serif"><div><b>Chaitanya Srinivas Lanka <br><br>
<span style="color:rgb(153,153,153)">Wiss. Mitarbeiter </span></b><span style="color:rgb(153,153,153)"><b><font face="arial, sans-serif">PhD Student</font><font face="arial, sans-serif"><b><br>
</b></font><span><font><span>Functional and Restorative Neurosurgery </span></font></span><span><font><span><font face="arial, sans-serif">Neural Information Processing</font></span></font></span><span><font><span><br>Neurosurgical University Hospital</span></font></span></b><b><span><font><font face="arial, sans-serif"><b> </b></font></font></span><span><font><font face="arial, sans-serif">Graduate Training Center for Neuroscience</font></font></span><span><font> <br>
<span>Eberhard Karls University </span></font></span><span><font><font face="arial, sans-serif">Eberhard Karls University</font></font></span><span><font><font face="arial, sans-serif"><b> </b></font><span><br>
</span></font></span></b></span><font face="arial, sans-serif"><span style="color:rgb(153,153,153)"><b><span><font><span>Otfried-Mueller-Str.45</span> </font></span>Österbergstr. 3</b></span><b><span style="color:rgb(153,153,153)"><font><span> <br>
D-72076 Tuebingen</span></font></span> </b><font face="arial, sans-serif"><b><span style="color:rgb(153,153,153)"><font><span>D-72074 Tuebingen</span></font></span></b></font></font><b><br>
</b></div><div><b><font color="#006600">Mobile Phone Number : </font><a value="+4917679038395">+49-176-79035731<br></a></b><a value="+4917679038395"><font face="arial, sans-serif"><b><font color="#000099">===============================================</font></b></font><br>
</a></div>
</font></div></div>
<br><br><div class="gmail_quote">On Mon, Dec 16, 2013 at 7:38 PM, Alik Widge <span dir="ltr"><<a href="mailto:alik.widge@gmail.com" target="_blank">alik.widge@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div><div>I can't tell you about MEG, but here's a method for EEG:<br></div><div><a href="http://dx.doi.org/10.1016/j.clinph.2010.02.156" target="_blank">http://dx.doi.org/10.1016/j.clinph.2010.02.156</a><br>
<br></div>
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.<br><br></div>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.<br>
<br><br></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr">Alik Widge<br><a href="mailto:alik.widge@gmail.com" target="_blank">alik.widge@gmail.com</a><br><a href="tel:%28206%29%20866-5435" value="+12068665435" target="_blank">(206) 866-5435</a><br>
<br></div></div>
<br><br><div class="gmail_quote"><div><div class="h5">On Mon, Dec 16, 2013 at 12:35 PM, Raghavan Gopalakrishnan <span dir="ltr"><<a href="mailto:gopalar.ccf@gmail.com" target="_blank">gopalar.ccf@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
<div dir="ltr">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?<div><br></div><div>Thanks very much.</div>
<span><font color="#888888">
<div>Raghavan</div></font></span></div>
<br></div></div>_______________________________________________<br>
fieldtrip mailing list<br>
<a href="mailto:fieldtrip@donders.ru.nl" target="_blank">fieldtrip@donders.ru.nl</a><br>
<a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip" target="_blank">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br></blockquote></div><br></div>
<br>_______________________________________________<br>
fieldtrip mailing list<br>
<a href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a><br>
<a href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip" target="_blank">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a><br></blockquote></div><br></div></div>