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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Hi Rajat,
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<div>I am using a Neuromag Elekta system. </div>
<div>Provided I use bioleads to pick up ECG and EOG, when I run an ICA, ECG is picked up and removed very tidily. </div>
<div>We use leads above and below each eye (EOG), plus a lead on each wrist (ECG) and the elbow for ground. </div>
<div>In this case, running an ICA automatically and clearly picks up EOG and ECG and these can be removed cleanly.</div>
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<div>Previously I was not using bioleads. In that case, I only had data from the MEG sensors. When I ran the ICA, it was more difficult to identify a clean ECG component. But it was still possible to see components which were largely ECG and EOG, and these
could be removed. No ideal, but still possible. </div>
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<div>If your system allows use of bioleads, use these and run ft_componentanalysis followed by ft_rejectcomponent on preprocessed data.</div>
<div>If not, just run the ft_componentanalysis and ft_rejectcomponent anyway. ECG should still be able to be identified.</div>
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<div>Hope that helps!</div>
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<div>Kaelasha</div>
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<div id="divRpF407536" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> fieldtrip-bounces@science.ru.nl [fieldtrip-bounces@science.ru.nl] on behalf of Tyler Grummett [tyler.grummett@flinders.edu.au]<br>
<b>Sent:</b> Sunday, 21 December 2014 10:30 AM<br>
<b>To:</b> FieldTrip discussion list<br>
<b>Subject:</b> Re: [FieldTrip] ECG recording<br>
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<div>Hello rajat,</div>
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<div>To do the triangle, it's usually left wrist, right wrist and right leg. However in clinical studies, they use two electrodes: one underneath the right clavicle and the other roughly five centimetres below the left arm pit.</div>
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<div>As for removing it from the signal, the ICA method is your best bet. However it will be difficult and I'm not 100% you'll be to find a pure ICA component that contains just ECG activity.</div>
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<div>I hope I helped the slightest bit.</div>
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<div>Tyler<br>
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<div><br>
On 19 Dec 2014, at 11:31 pm, Rajat Thomas <<a href="mailto:r.thomas@nin.knaw.nl" target="_blank">r.thomas@nin.knaw.nl</a>> wrote:<br>
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<p>Dear FieldTrippers,<br>
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<p>I have not been able to find a resource for ECG recording and removal in FieldTrip.<br>
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<p>What is the best practise in terms of placing the electrodes (and how many) ? Left/Right<br>
</p>
<p>wrist?<br>
</p>
<p><br>
</p>
<p>Also is there a standard pipeline to remove the ECG from these measurements?<br>
</p>
<p><br>
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<p>Any pointers would be great.<br>
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<p><br>
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<p>Thank you.<br>
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<p> Rajat<br>
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<div name="divtagdefaultwrapper" style="font-family:calibri"><font size="2">Rajat Mani Thomas</font></div>
<div name="divtagdefaultwrapper" style="font-family:calibri"><font size="2">Social Brain Lab<br>
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<div><font size="2">Netherlands Institute for Neuroscience</font></div>
<div><font size="2">Amsterdam</font></div>
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