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<p style="">Hello Haiteng,<br>
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<p style="">Thankyou for the response. Yes I have gone through the tutorial. I use clean data to make the inverse spatial filter. But do then apply it to <br>
</p>
<p style="">marked out data or can apply it to non-marked out data. Also, is there a way to append trials after you run an automatic artefact<br>
</p>
<p style="">rejection algorithm over it? At the moment, I am trying to use a function that requires equal trial lengths. I can use ft_redefinetrial<br>
</p>
<p style="">to grab a 2 second epoch from each 'trial'. However that feel a little crude as I am throwing out a lot of data.<br>
</p>
<p style=""><br>
</p>
<p style="">Your help will be greatly appreciated.<br>
</p>
<p style=""><br>
</p>
<p style="">Tyler <br>
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<div style="font-size:13px">*************************
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<div><font face="Arial"><i>Tyler Grummett ( BBSc, BSc(Hons I))</i></font></div>
<div><font face="Arial"><i>PhD Candidate</i></font></div>
<div><font face="Arial"><i>Brain Signals Laboratory</i></font></div>
<div><font face="Arial"><i>Flinders University</i></font></div>
<div><font face="Arial"><i>Rm 5A301</i></font></div>
<div><font face="Arial"><i>Ext 66124</i></font></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> fieldtrip-bounces@science.ru.nl <fieldtrip-bounces@science.ru.nl> on behalf of Haiteng Jiang <haiteng.jiang@gmail.com><br>
<b>Sent:</b> Monday, 14 April 2014 3:53 PM<br>
<b>To:</b> fieldtrip@science.ru.nl<br>
<b>Subject:</b> Re: [FieldTrip] automatic artifact correction after virtual channels/beamformer</font>
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<div dir="ltr">Hi Tyler,
<div> It is always nice to computate virtual MEG channels based on artifact-corrected CLEAN data . Note that we use clean data to get the inverse spatial filter by DICS. Regrading to how to create virtual channel , please have a look at tutorial: <a href="http://fieldtrip.fcdonders.nl/tutorial/shared/virtual_sensors" style="">http://fieldtrip.fcdonders.nl/tutorial/shared/virtual_sensors</a></div>
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<div> Best,</div>
<div> Haiteng<br>
<div class="gmail_extra"><br>
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<br>
Message: 2<br>
Date: Mon, 14 Apr 2014 02:54:16 +0000<br>
From: Tyler Grummett <<a href="mailto:tyler.grummett@flinders.edu.au">tyler.grummett@flinders.edu.au</a>><br>
To: FieldTrip discussion list <<a href="mailto:fieldtrip@science.ru.nl">fieldtrip@science.ru.nl</a>><br>
Subject: [FieldTrip] automatic artifact correction after virtual<br>
channels/beamformer<br>
Message-ID:<br>
<<a href="mailto:d9f26aff9ba640b29bfa36febf84e9cc@SIXPR03MB368.apcprd03.prod.outlook.com">d9f26aff9ba640b29bfa36febf84e9cc@SIXPR03MB368.apcprd03.prod.outlook.com</a>><br>
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?Hello all,<br>
<br>
<br>
I was just wondering whether it is necessary to use the artifact corrected data when creating virtual channels from beamformer sources<br>
<br>
or whether you are able to use original, non-artifact corrected data.<br>
<br>
<br>
Tyler<br>
<br>
<br>
*************************<br>
<br>
Tyler Grummett ( BBSc, BSc(Hons I))<br>
PhD Candidate<br>
Brain Signals Laboratory<br>
Flinders University<br>
Rm 5A301<br>
Ext 66124<br>
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<div><font face="arial, helvetica, sans-serif">Haiteng Jiang</font></div>
<div><font face="arial, helvetica, sans-serif">PhD candidate</font></div>
<div><font face="arial, helvetica, sans-serif">Neuronal Oscillations Group</font></div>
<div><font face="arial, helvetica, sans-serif">Donders Institute for Brain, Cognition and Behaviour</font></div>
<div><font face="arial, helvetica, sans-serif">Centre for Cognitive Neuroimaging</font></div>
<div><font face="arial, helvetica, sans-serif">Radboud University Nijmegen</font></div>
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<div><span style="line-height:18px"><font face="arial, helvetica, sans-serif">Room 2.32</font></span></div>
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<div><span style="line-height:18px"><font face="arial, helvetica, sans-serif">6525 EN Nijmegen</font></span></div>
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<div><font face="arial, helvetica, sans-serif"> Tel.: +31 (0)243668291</font></div>
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