<div dir="ltr">Hi Steven,<div><br></div><div>I've noticed this "frequency smearing" phenomenon occasionally, too, in my ERSP graphs, and i believe it has to do with your ERSP settings. The idea is that the long "vertical" streaks, or "smears" in your graph are the result of multiple distinct frequency bands being somehow lumped or averaged together within each time point, leading to the impression that at a given moment in time, many different frequency bands are all highly correlated (i.e. all having high power at the same time). This isn't completely unheard-of, I don't think, but it's also not very likely in most experimental settings.</div><div><br></div><div>If you make sure to put " 'freqs', X " in your ERSP parameters box, where "X" is a high enough number of distinct frequencies such that EEGLAB doesn't try to force it's results onto a small number of frequencies, then you should be able to get rid of that smearing. You might also want to play with the wavelet cycle parameters. This might work for you, in the ERSP parameters box: </div><div><br></div><div>'cycles', [3 0.8], 'freqs', [5 75], 'nfreqs', 50, 'ntimesout', 100</div><div><br></div><div>Hope that helps,</div><div><br></div><div>James<br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, May 4, 2015 at 3:00 PM, <span dir="ltr"><<a href="mailto:eeglablist-request@sccn.ucsd.edu" target="_blank">eeglablist-request@sccn.ucsd.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Send eeglablist mailing list submissions to<br>
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<br>Today's Topics:<br>
<br>
1. "Frequency Smearing" and ERSP graphs (Steven Pillen)<br>
2. Error with Measure Projection (Eddins, Ann)<br>
3. Ocular Correction (pop_gratton) in EEGLAB 13_4_4 (Anjali Thapar)<br>
4. Computing ERSPs in parallel? (Tom Bullock)<br>
5. EOG location (Mostafa IR)<br>
6. Topography plot in component clusters (Shingo Tokimoto)<br>
7. Porto IV CAN: 4th Cognitive and Affective Neurophysiology<br>
Summer School (Fernando Ferreira-Santos)<br>
8. swrite (Roy Cox)<br>
9. Re: Can I manually reorganise the order of trials within set<br>
files and save them? (Stephen Politzer-Ahles)<br>
10. automatic artifact rejection (Son, D.M.E. van)<br>
<br><br>---------- Forwarded message ----------<br>From: Steven Pillen <<a href="mailto:stevendpillen@gmail.com">stevendpillen@gmail.com</a>><br>To: eeglablist <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Cc: <br>Date: Sat, 2 May 2015 15:24:54 -0700<br>Subject: [Eeglablist] "Frequency Smearing" and ERSP graphs<br><div dir="ltr"><div><div>Hello, EEGLAB-List.<br><br><span dir="ltr">Here are some ERSP graphs
included in a manuscript we submitted to a publication:<br><br><a href="http://i.imgur.com/KkvAGPA.png" target="_blank">http://i.imgur.com/KkvAGPA.png</a><br><a href="http://i.imgur.com/iLHeKY9.png" target="_blank">http://i.imgur.com/iLHeKY9.png</a><br><br>One of the peer
reviewers said that the graph showed "frequency smear", and we are not
entirely sure what that means. Is what you see in these images unusual?
If there is frequency smearing, what is it, and what can we do to
correct or account for it?</span><br><br></div>Thank you,<br></div>Steven Pillen<br></div>
<br><br>---------- Forwarded message ----------<br>From: "Eddins, Ann" <<a href="mailto:aeddins@usf.edu">aeddins@usf.edu</a>><br>To: eeglablist <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Cc: <br>Date: Thu, 30 Apr 2015 20:24:05 +0000<br>Subject: [Eeglablist] Error with Measure Projection<br>
<div lang="EN-US" link="blue" vlink="purple">
<div>
<p class="MsoNormal">I’ve just started working with Measure Projection and keep bumping into an error related to concatenation and the size of the matrices. It occurs whether I try to project ERP, ERSP or Spec. I have precomputed both channel and component
measures and am wondering if the error is due to a precomputing step that might have reduced the size of my dataset for some subjects/conditions and not others? The error is as follows:<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Inverting ERP component polarities based on scalp map polarities<u></u><u></u></p>
<p class="MsoNormal">Error in concatenating condition. Some conditions for certain subjects might be missing.<u></u><u></u></p>
<p class="MsoNormal">Dimensions of matrices being concatenated are not consistent.<u></u><u></u></p>
<p class="MsoNormal">Undefined variable combinedConditions.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Error in pr.dipoleAndMeasureOfStudyErp (line 101)<u></u><u></u></p>
<p class="MsoNormal"> icCombinedErp = cat(2, combinedConditions{:});<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Error in create_mpt_submenu>command_measure_project (line 64)<u></u><u></u></p>
<p class="MsoNormal"> STUDY.measureProjection.(measureName).object = pr.dipoleAndMeasureOfStudyErp(STUDY, ALLEEG);<u></u><u></u></p>
<p class="MsoNormal"><u></u><u></u></p>
<p class="MsoNormal">Error while evaluating uimenu CallbackDoes it matter what pre-processing steps have been completed? <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Any suggestions would be welcome! <u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Thanks,<u></u><u></u></p>
<p class="MsoNormal">Ann<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div>
<br><br>---------- Forwarded message ----------<br>From: Anjali Thapar <<a href="mailto:athapar@brynmawr.edu">athapar@brynmawr.edu</a>><br>To: <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Cc: <br>Date: Thu, 30 Apr 2015 12:16:42 -0400<br>Subject: [Eeglablist] Ocular Correction (pop_gratton) in EEGLAB 13_4_4<br>Hello All,<br>
<br>
I recently updated to EEGLAB 13_4_4 and noticed that the option to use Ocular Correction (pop_gratton) to correct blink artifacts is no longer available. Has the function been relabeled or moved?<br>
<br>
Please advise.<br>
<br>
thank you,<br>
Anjali Thapar<br>
<br>
<br><br>---------- Forwarded message ----------<br>From: Tom Bullock <<a href="mailto:thomas.bullock@psych.ucsb.edu">thomas.bullock@psych.ucsb.edu</a>><br>To: "<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>" <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Cc: <br>Date: Fri, 1 May 2015 09:53:02 -0700<br>Subject: [Eeglablist] Computing ERSPs in parallel?<br>Hello EEGLAB community,<br>
<br>
I'm using the STUDY function to compute ERSPs for a dataset with 18 subjects and 3 conditions per subject. The ERSPs take a number of hours to compute, so I'd like to set up a parfor loop to create the "xxx.datersp" files in parallel using our distributed processing network.<br>
<br>
This post indicates that it should be possible to set up the parfor loop: <a href="http://sccn.ucsd.edu/pipermail/eeglablist/2014/008914.html" target="_blank">http://sccn.ucsd.edu/pipermail/eeglablist/2014/008914.html</a> . However I'm not sure which of the functions involved in the ERSP computation is the one I should attempt to parallelize (std_precomp.m, std_ersp.m or newtimef.m?), and which of the for loops I should be editing.<br>
<br>
Does anyone have any insight into how to set this up?<br>
<br>
Thanks!<br>
<br>
Tom<br>
<br>
p.s. this is the function I'm currently using to create the ERSPs:<br>
<br>
[STUDY ALLEEG] = std_precomp(STUDY, ALLEEG, {},'interp','on','recompute','on','ersp','on','erspparams',...<br>
{'cycles' cycleParam 'nfreqs' 27 'timesout' [0:100:3000] 'freqs' [4 30] },'itc','off');<br>
<br>
-- <br>
Tom Bullock, PhD<br>
<br>
Postdoctoral Researcher, Department of Psychological and Brain Sciences,<br>
University of California, Santa Barbara, CA 93106-9660<br>
<br>
<a href="mailto:bullock@psych.ucsb.edu" target="_blank">bullock@psych.ucsb.edu</a><br>
<br>
<a href="https://labs.psych.ucsb.edu/giesbrecht/barry/Attention_Lab/Tom_Bullock.html" target="_blank">https://labs.psych.ucsb.edu/giesbrecht/barry/Attention_Lab/Tom_Bullock.html</a><br>
<br>
<a href="http://www.linkedin.com/in/tomwbullock" target="_blank">www.linkedin.com/in/tomwbullock</a><br>
<br>
<br>
<br><br>---------- Forwarded message ----------<br>From: Mostafa IR <<a href="mailto:mostafa.rouzbahani@gmail.com">mostafa.rouzbahani@gmail.com</a>><br>To: EEGLAB List <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Cc: <br>Date: Fri, 1 May 2015 18:23:49 +0430<br>Subject: [Eeglablist] EOG location<br><div dir="ltr"><div>Hi everyone<br><br></div>I know my channels location of EEG data and I used the sample location folder of EEGLAB to assign the labels. But I couldn't find the EOG channel label in these files. I need EOG for my ICA analysis.<br>How can I assign for a channel an EOG label? <br><div><br></div><div>Best regards <br></div></div>
<br><br>---------- Forwarded message ----------<br>From: Shingo Tokimoto <<a href="mailto:tokimoto@mejiro.ac.jp">tokimoto@mejiro.ac.jp</a>><br>To: UCSD List EEG <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Cc: <br>Date: Fri, 1 May 2015 07:24:44 +0900<br>Subject: [Eeglablist] Topography plot in component clusters<br>Dear EEGLAB experts,<br>
<br>
Is it impossible to plot topographies of two experimental conditions for a component cluster as we can do in channel pot (for a time-window)? Thank you in advance.<br>
<br>
************************************************<br>
Shingo Tokimoto, Ph.D.<br>
in Linguistics and Psychology<br>
Department of Foreign Languages<br>
Mejiro University<br>
4-31-1, Naka-Ochiai, Shinjuku, Tokyo,<br>
161-8539, Japan<br>
<a href="mailto:tokimoto@mejiro.ac.jp">tokimoto@mejiro.ac.jp</a><br>
************************************************<br>
<br>
<br>
<br>
<br><br>---------- Forwarded message ----------<br>From: Fernando Ferreira-Santos <<a href="mailto:frsantos@fpce.up.pt">frsantos@fpce.up.pt</a>><br>To: "<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>" <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Cc: <br>Date: Thu, 30 Apr 2015 15:34:17 +0000<br>Subject: [Eeglablist] Porto IV CAN: 4th Cognitive and Affective Neurophysiology Summer School<br>
<div>
<div style="direction:ltr;font-family:Tahoma;color:rgb(0,0,0);font-size:10pt">
<div>
<p>Dear colleagues,</p>
<p> </p>
<p>The Laboratory of Neuropsychopsysiology of the University of Porto (<a href="http://www.fpce.up.pt/labpsi/" target="_blank">http://www.fpce.up.pt/labpsi/</a>) is pleased to announce the 4th edition of the International Cognitive and Affective Neurophysiology Summer School:
Acquisition, processing, and analysis of EEG signal. </p>
<p> </p>
<p>This summer school is focused on the application of Electroencephalography (EEG) and Event Related Potential (ERP) techniques to the study of cognitive and affective processes. The course will be fully taught in English and is aimed at an introductory level,
so no previous experience with EEG or ERP is required.</p>
<p> </p>
<p>This event will take place from 7-12 of September 2015 in the lovely city of Porto.</p>
<p> </p>
<p>In last year’s edition the course was fully booked and, as such, we recommend early registration (course places are attributed by order of registration).
</p>
<p> </p>
<p>For additional details and instructions on how to register, please consult our website (<a href="http://www.fpce.up.pt/labpsi/summerschool/" target="_blank">http://www.fpce.up.pt/labpsi/summerschool/</a>).</p>
<p> </p>
<p> </p>
<p>Please feel free to pass this information along to students or researchers that may be potentially interested.<br>
</p>
<p>Thanks you and best wishes,</p>
<p> </p>
<div style="font-size:13px;font-family:Tahoma">
<div><font style="font-size:13px;font-family:Tahoma" size="2">--<br style="font-family:Tahoma">
<span style="font-family:Tahoma">Fernando Ferreira-Santos, PhD</span></font></div>
<div><font style="font-size:13px;font-family:Tahoma" size="2"><span style="font-family:Tahoma"></span></font> </div>
<div><font style="font-size:13px;font-family:Tahoma" size="2"><span style="font-family:Tahoma"></span></font><font style="font-size:13px;font-family:Tahoma" size="2">Lecturer<br style="font-family:Tahoma">
<span style="font-family:Tahoma">Laboratory of Neuropsychophysiology</span></font><font style="font-size:13px;font-family:Tahoma" size="2"><span style="font-family:Tahoma"></span></font><br>
<font style="font-size:13px;font-family:Tahoma" size="2"><span style="font-family:Tahoma">Faculty of Psychology and Education Sciences</span><br style="font-family:Tahoma">
<span style="font-family:Tahoma">University of Porto</span><br style="font-family:Tahoma">
</font><font size="2">Rua Alfredo Allen, 4200-135 Porto (Portugal)<br style="font-family:Tahoma">
<span style="font-size:13px;font-family:Tahoma">Tel.: <a href="tel:%2B351%20226079700" value="+351226079700" target="_blank">+351 226079700</a> (ext. 409)</span><br style="font-family:Tahoma">
<span style="font-family:Tahoma"></span><span style="font-size:13px;font-family:Tahoma">E-mail: <a href="mailto:frsantos@fpce.up.pt" target="_blank">frsantos@fpce.up.pt</a><br>
</span></font><font style="font-size:13px;font-family:Tahoma" size="2"><span style="font-family:Tahoma"><a href="http://www.fpce.up.pt/labpsi/" target="_blank">http://www.fpce.up.pt/labpsi/</a></span></font></div>
</div>
</div>
</div>
</div>
<br><br>---------- Forwarded message ----------<br>From: Roy Cox <<a href="mailto:roycox.roycox@gmail.com">roycox.roycox@gmail.com</a>><br>To: "'eeglablist' (<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>)" <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Cc: <br>Date: Thu, 30 Apr 2015 10:27:47 -0400<br>Subject: [Eeglablist] swrite<br><div dir="ltr"><span style="font-size:12.8000001907349px">hi,</span><div style="font-size:12.8000001907349px"><br></div><div style="font-size:12.8000001907349px">I'm trying to use the command line to export data into edf format.</div><div style="font-size:12.8000001907349px"><p>I'm calling pop_writeeeg, which calls writeeeg, which finally calls swrite.</p><p>But there's no function swrite to be found anywhere. I found a random swrite online but this gives me yet another error.</p><p>Any ideas how to get this working? I use eeglab 13.4.4b</p><p>Roy</p></div></div>
<br><br>---------- Forwarded message ----------<br>From: Stephen Politzer-Ahles <<a href="mailto:spa268@nyu.edu">spa268@nyu.edu</a>><br>To: "Carolin Sievers (PSY)" <<a href="mailto:Carolin.Sievers@uea.ac.uk">Carolin.Sievers@uea.ac.uk</a>><br>Cc: "<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>" <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Date: Thu, 30 Apr 2015 16:05:41 +0400<br>Subject: Re: [Eeglablist] Can I manually reorganise the order of trials within set files and save them?<br><div dir="ltr">Hi Carolin,<div><br></div><div>Have you tried running this code to see if it actually does re-order your events? It should be fairly straightforward to check (i.e., see what the event values for the first few trials are before and after running your 'list 2' code).</div><div><br></div><div>If that doesn't work, I imagine it should be easy to do manually by just re-ordering the indices of all the relevant data structures, e.g.:</div><div>order = <span style="color:rgb(0,0,0);font-family:Tahoma;font-size:13.3333330154419px">[2 5 6 1 4 8 9 7 3];</span></div><div><span style="color:rgb(0,0,0);font-family:Tahoma;font-size:13.3333330154419px">EEG.data = EEG.data(:,:,order);</span></div><div><span style="color:rgb(0,0,0);font-family:Tahoma;font-size:13.3333330154419px">EEG.epoch = EEG.epoch{order};</span></div><div><font color="#000000" face="Tahoma"><span style="font-size:13.3333330154419px">% etc...</span></font></div><div><font color="#000000" face="Tahoma"><span style="font-size:13.3333330154419px"><br></span></font></div><div><font color="#000000" face="Tahoma"><span style="font-size:13.3333330154419px">There may also be built-in functions in EEGLAB or ERPLAB that do this, but I'm not aware of any myself.</span></font></div><div><font color="#000000" face="Tahoma"><span style="font-size:13.3333330154419px"><br></span></font></div><div><font color="#000000" face="Tahoma"><span style="font-size:13.3333330154419px">Best,</span></font></div><div><font color="#000000" face="Tahoma"><span style="font-size:13.3333330154419px">Steve</span></font></div></div><div class="gmail_extra"><br clear="all"><div><div><div dir="ltr"><div><br><br></div>Stephen Politzer-Ahles<br>New York University, Abu Dhabi<br>Neuroscience of Language Lab<br><a href="http://www.nyu.edu/projects/politzer-ahles/" target="_blank">http://www.nyu.edu/projects/politzer-ahles/</a><br></div></div></div>
<br><div class="gmail_quote">On Tue, Apr 28, 2015 at 6:15 PM, Carolin Sievers (PSY) <span dir="ltr"><<a href="mailto:Carolin.Sievers@uea.ac.uk" target="_blank">Carolin.Sievers@uea.ac.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div>
<div style="direction:ltr;font-family:Tahoma;color:rgb(0,0,0);font-size:10pt">Hello EEGlab community,
<div><br>
</div>
<div>I am trying to reorganise the order of trials in my EEG .set files. </div>
<div>I was hoping to use the following function:</div>
<div>EEG = pop_selectevent( EEG, 'epoch',[] ,'deleteevents','off','deleteepochs','on','invertepochs','off');</div>
<div><br>
</div>
<div>If I put in parentheses the trials I would like to include, in the order I would like them to be in in a new .set file, will this work? </div>
<div><br>
</div>
<div>If this is unclear, here some more details: </div>
<div>Based on behavioural data, we create two or more sub-sets from one EEG recording. However, within these sub-sets, the order in which stimuli were presented is not the same. Is there a way for me to reorganise the order of trials and save that order in
a new .set file? E.g., </div>
<div><br>
</div>
<div>List 1</div>
<div>EEG = pop_selectevent( EEG, 'epoch',[1:9] ,'deleteevents','off','deleteepochs','on','invertepochs','off');</div>
<div><br>
</div>
<div>List 2</div>
<div>EEG = pop_selectevent( EEG, 'epoch',[2 5 6 1 4 8 9 7 3] ,'deleteevents','off','deleteepochs','on','invertepochs','off');</div>
<div><br>
</div>
<div>Thank you very much for your help.</div>
<div><br>
</div>
<div>
<div style="font-family:'Segoe UI',Helvetica,Arial,sans-serif;font-size:medium;margin:0px;background-color:white">
<font face="Calibri,sans-serif" size="2"><span style="font-size:11pt"><font face="Arial,sans-serif" size="2" color="#222222"><span style="font-size:10.5pt">Best wishes,</span></font></span></font></div>
<div style="font-family:'Segoe UI',Helvetica,Arial,sans-serif;font-size:medium;margin:0px;background-color:white">
<font face="Calibri,sans-serif" size="2"><span style="font-size:11pt"><font face="Arial,sans-serif" size="2" color="#222222"><span style="font-size:10.5pt">Carolin</span></font></span></font></div>
<div style="font-family:'Segoe UI',Helvetica,Arial,sans-serif;font-size:medium;margin:0px;background-color:white">
<font face="Calibri,sans-serif" size="2"><span style="font-size:11pt"><font face="Segoe Script,sans-serif" size="2" color="#222222"><span style="font-size:10pt"><br>
</span></font><font face="Arial,sans-serif" size="2" color="#222222"><span style="font-size:10pt">_____________</span></font></span></font></div>
<div style="font-family:'Segoe UI',Helvetica,Arial,sans-serif;font-size:medium;margin:0px;background-color:white">
<font face="Calibri,sans-serif" size="2"><span style="font-size:11pt"><font face="Arial,sans-serif" size="2" color="#222222"><span style="font-size:10pt">Carolin Sievers</span></font><font face="Arial,sans-serif" size="1" color="#222222"><span style="font-size:8pt"> (PSY)</span></font><font face="Arial,sans-serif" size="1" color="#222222"><span style="font-size:8pt"><br>
PhD Student </span></font><font face="Arial,sans-serif" size="1" color="#222222"><span style="font-size:8pt"><br>
School of Psychology</span></font></span></font></div>
<div style="font-family:'Segoe UI',Helvetica,Arial,sans-serif;font-size:medium;margin:0px;background-color:white">
<font face="Calibri,sans-serif" size="2"><span style="font-size:11pt"><font face="Arial,sans-serif" size="1" color="#222222"><span style="font-size:8pt">LSB 0.109</span></font></span></font></div>
<div style="font-family:'Segoe UI',Helvetica,Arial,sans-serif;font-size:medium;margin:0px;background-color:white">
<font face="Calibri,sans-serif" size="2"><span style="font-size:11pt"><font face="Arial,sans-serif" size="1" color="#222222"><span style="font-size:8pt">University of East Anglia</span></font></span></font></div>
<div style="font-family:'Segoe UI',Helvetica,Arial,sans-serif;font-size:medium;margin:0px;background-color:white">
<font face="Calibri,sans-serif" size="2"><span style="font-size:11pt"><font face="Arial,sans-serif" size="1" color="#222222"><span style="font-size:8pt">Norwich, NR47TJ</span></font></span></font></div>
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<font face="Calibri,sans-serif" size="2"><span style="font-size:11pt"><a href="https://www.uea.ac.uk/psychology/people/profile/carolin-sievers" target="_blank"><font face="Arial,sans-serif" size="1"><span style="font-size:8pt">https://www.uea.ac.uk/psychology/people/profile/carolin-sievers</span></font></a><font face="Arial,sans-serif" size="1" color="#222222"><span style="font-size:8pt"> </span></font><font face="Arial,sans-serif" size="1" color="#222222"><span style="font-size:8pt"><br>
</span></font><a href="mailto:Carolin.Sievers@uea.ac.uk" target="_blank"><font face="Arial,sans-serif" size="1"><span style="font-size:8pt"><font color="#0563C1">Carolin.Sievers@uea.ac.uk</font></span></font></a></span></font></div>
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<br><br>---------- Forwarded message ----------<br>From: "Son, D.M.E. van" <<a href="mailto:d.m.e.van.son@fsw.leidenuniv.nl">d.m.e.van.son@fsw.leidenuniv.nl</a>><br>To: "'<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>'" <<a href="mailto:eeglablist@sccn.ucsd.edu">eeglablist@sccn.ucsd.edu</a>><br>Cc: <br>Date: Thu, 30 Apr 2015 08:37:13 +0000<br>Subject: [Eeglablist] automatic artifact rejection<br>
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<div>Dear Eeglab members, <br>
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Before manually selecting artifacts in my data, I would like to pre-select artifacts automatically. I have seen that Eeglab provides an automatic epoch rejection toolbox, but specific epoch selection that I would like to make, does not seem to be provided.
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e.g.; I would like to remove epochs where the difference between the maximum and minimum in an interval of a selectable length, and the difference between the maximum and minimum in the epoch itself, exceeds a specific value. Also, I’d like to remove epochs
wherin the absolute difference between two neighboring sampling points exceeds a certain value.
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Does anyone have an idea if this is possible in Eeglab automatically? Or perhaps it is possible that I script this separately?
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Many thanks in advance<br>
<br>
Dana </div>
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Eeglablist page: <a href="http://www.sccn.ucsd.edu/eeglab/eeglabmail.html" target="_blank">http://www.sccn.ucsd.edu/eeglab/eeglabmail.html</a><br>
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