<div dir="ltr"><div>Frank, that's a very good point.</div><div><br></div><div>Check out my plugin trimOutlier. With this tool you can do a simple sanity check with your <i>continuous data</i> in channels only in 5 sec (all channels & all datapoints), and simple trimming interactively in the next 10 sec if necessary. I updated it last week, and hopefully it's now more useful.<br>
</div><div><a href="http://sccn.ucsd.edu/wiki/Plugin_list_process">http://sccn.ucsd.edu/wiki/Plugin_list_process</a><br></div><div><br></div><div>For more sophisticated <i>continuous data</i> cleaning, check out clean_rawdata. This one is very powerful and fully automatic (credited to Christian Kothe).</div>
<div><br></div><div>Makoto</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-03-08 4:35 GMT-08:00 Frank Preston <span dir="ltr"><<a href="mailto:ffpresto@uwaterloo.ca" target="_blank">ffpresto@uwaterloo.ca</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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Hi Makoto,
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<div>I like the idea of checking my channel data, not necessarily for channel deletion, but as a way to gain a full understanding of our data. Would you do this check using EEG.data for each channel? Or should I look in a different data-store?</div>
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<div>Thanks,</div>
<div> .. Frank</div>
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<div style="font-family:Tahoma;font-size:13px">-- <br>
<b><span style="font-size:12pt;font-family:"Calibri","sans-serif";color:rgb(192,0,0)">Frank Preston</span></b><span style="font-size:12pt;font-family:"Calibri","sans-serif""><br>
</span><span style="font-size:12pt;font-family:"Calibri","sans-serif"">Psychophysiology Lab Technician</span><span style="font-size:12pt;font-family:"Calibri","sans-serif""></span><span style="font-size:12pt;font-family:"Calibri","sans-serif"">
University of Waterloo<br>
</span><span style="font-size:12pt;font-family:"Calibri","sans-serif"">PAS 2270,</span><span style="font-size:12pt;font-family:"Calibri","sans-serif""> Psychology Department <span></span>200 University Ave. W.<br>
Phone: <a href="tel:519-888-4567%20x%2038976" value="+15198884567" target="_blank">519-888-4567 x 38976</a> <span> </span>Waterloo, Ontario, N2L 3G1</span><span style="font-size:12pt;font-family:Times New Roman"></span></div>
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<div style="direction:ltr"><font face="Tahoma" color="#000000"><b>From:</b> <a href="mailto:eeglablist-bounces@sccn.ucsd.edu" target="_blank">eeglablist-bounces@sccn.ucsd.edu</a> [<a href="mailto:eeglablist-bounces@sccn.ucsd.edu" target="_blank">eeglablist-bounces@sccn.ucsd.edu</a>] on behalf of Makoto Miyakoshi [<a href="mailto:mmiyakoshi@ucsd.edu" target="_blank">mmiyakoshi@ucsd.edu</a>]<br>
<b>Sent:</b> March 6, 2014 9:30 PM<div class=""><br>
<b>To:</b> Iman M.Rezazadeh<br>
<b>Cc:</b> EEGLAB List<br>
</div><b>Subject:</b> Re: [Eeglablist] selecting bad channel<br>
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<div>Dear Iman,</div>
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There are two types of bad channels: crazy (10000 uV) or dead (0 uV). After highpass & lowpass filtering, you can simply calculate standard deviation across time for each channel (if the channel is more or less stationary).
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<div>If I have >100 channels I would not be afraid of false negative and discard channels generously.</div>
<div><br>
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<div>Makoto</div>
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<div class="gmail_extra"><br>
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<div class="gmail_quote">2014-03-06 14:03 GMT-08:00 Iman M.Rezazadeh <span dir="ltr">
<<a href="mailto:irezazadeh@ucdavis.edu" target="_blank">irezazadeh@ucdavis.edu</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>So what is your strategy to reject channels?</div>
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<div style="font-size:75%;color:#575757">Sent from my Verizon Wireless 4G LTE smartphone</div>
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-------- Original message --------<br>
From: Makoto Miyakoshi <u></u><br>
Date:03/05/2014 11:41 (GMT-08:00) <br>
To: "Iman M.Rezazadeh" <u></u><br>
Cc: EEGLAB List <u></u><br>
Subject: Re: selecting bad channel <br>
<br>
<div dir="ltr">I never use EEGLAB's automatic channel rejection because it usually rejects more than I need to.
<div><br>
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<div>Makoto</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">2014-03-05 11:31 GMT-08:00 Iman M.Rezazadeh <span dir="ltr">
<<a href="mailto:irezazadeh@ucdavis.edu" target="_blank">irezazadeh@ucdavis.edu</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">By looking at data …in my point of view sometimes stats cannot show if a channel is good or bad<u></u><u></u></span></p>
<p class="MsoNormal"><a name="144a1b0c4f104b93_1449978a5893b1f2_14493bacf09fb611__MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></a></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> Makoto Miyakoshi [mailto:<a href="mailto:mmiyakoshi@ucsd.edu" target="_blank">mmiyakoshi@ucsd.edu</a>]
<br>
<b>Sent:</b> Wednesday, March 5, 2014 10:12 AM<br>
<b>To:</b> Iman M.Rezazadeh<br>
<b>Cc:</b> EEGLAB List<br>
<b>Subject:</b> Re: selecting bad channel<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Dear Iman,<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Select data -> select by channels. I don't know though how you judge them 'bad'.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Makoto<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><u></u> <u></u></p>
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<p class="MsoNormal">2014-03-05 1:08 GMT-08:00 Iman M.Rezazadeh <<a href="mailto:irezazadeh@ucdavis.edu" target="_blank">irezazadeh@ucdavis.edu</a>>:<u></u><u></u></p>
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<p class="MsoNormal">Hi EEGLABERS,<u></u><u></u></p>
<p class="MsoNormal">Could you please let me know if there is anyway on GUI to select a subset of bad channels (not all) after doing ‘automatic channel rejection’ ?
<u></u><u></u></p>
<p class="MsoNormal">CIAO <u></u><u></u></p>
<p class="MsoNormal">Iman<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal"><b>-------------------------------------------------------------</b><u></u><u></u></p>
<p class="MsoNormal"><b>Iman M.Rezazadeh, Ph.D</b><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Postdoctorocal Research Fellow<u></u><u></u></p>
<p class="MsoNormal">Semel Intitute, UCLA , Los Angeles<u></u><u></u></p>
<p class="MsoNormal">& Center for Mind and Brain, UC DAVIS, Davis<u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
<p class="MsoNormal">Mob.: <a href="tel:310-490-1808" target="_blank">310-490-1808</a><u></u><u></u></p>
<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">-- <u></u><u></u></p>
<div>
<p class="MsoNormal">Makoto Miyakoshi<br>
Swartz Center for Computational Neuroscience<br>
Institute for Neural Computation, University of California San Diego<u></u><u></u></p>
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-- <br>
<div dir="ltr">Makoto Miyakoshi<br>
Swartz Center for Computational Neuroscience<br>
Institute for Neural Computation, University of California San Diego<br>
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</blockquote>
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<div><br>
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-- <br>
<div dir="ltr">Makoto Miyakoshi<br>
Swartz Center for Computational Neuroscience<br>
Institute for Neural Computation, University of California San Diego<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Makoto Miyakoshi<br>Swartz Center for Computational Neuroscience<br>Institute for Neural Computation, University of California San Diego<br></div>
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