<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">Dear John,<br></div><div class="gmail_default" style="font-family:verdana,sans-serif">thanks a lot for your promt reply and your suggestion. I guess that I was sticking to the BEM head model just because I read the tutorial for EEG BEM head model first, but going quickly through the studies you have mentioned and considering the tests you have performed, I may also consider to switch to the FEM head model or to simply use the concentric spheres (which appeared to work similar to BEMCP in your comparisons). I am relatively new to source localization and had no crash/errors in my pipeline, and this combination makes always difficult to find possible pitfalls.<br><br>As soon as I have them ready, I will post the results obtained with the
FEM head model as well, maybe they will be useful for some other users
:)<br><br>Thanks again for your support! <br></div><div class="gmail_default" style="font-family:verdana,sans-serif">All the best,<br></div><div class="gmail_default" style="font-family:verdana,sans-serif">Debora<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Mar 12, 2016 at 3:42 PM, RICHARDS, JOHN <span dir="ltr"><<a href="mailto:RICHARDS@mailbox.sc.edu" target="_blank">RICHARDS@mailbox.sc.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div>Deb:</div>
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<div>I have had problems with BEMCP.</div>
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<div> 1—one of the practical / technical problems is that if the compartments overlap, or even come close, then the procedure would not work—the ft_sourceanlaysis crashed.</div>
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<div> 2—There are a couple of studies comparing BEMCP and dipoli, among other methods. The BEMCP method does not fare well, the dipoli fares better, </div>
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<div>E. g., among three or four studies I have seen. </div>
<div><span style="font-family:'Times New Roman';font-size:12px">Gramfort, A., et al. (2010). "OpenMEEG: opensource software for quasistatic bioelectromagnetics."
</span><span style="font-family:'Times New Roman';font-size:12px;text-decoration:underline">Biomed Eng Online</span><span style="font-family:'Times New Roman';font-size:12px">
</span><b style="font-family:'Times New Roman';font-size:12px">9</b><span style="font-family:'Times New Roman';font-size:12px">: 45.</span></div>
<p style="margin:0px;font-size:12px;line-height:normal;font-family:'Times New Roman';min-height:15px">
Gramfort, A., et al. (2011). "Forward field computation with OpenMEEG." <span style="text-decoration:underline">
Comput Intell Neurosci</span> <b>2011</b>: 923703.</p>
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<div>3—I have directly compared BEMCP, a 4-shell concentric spheres, dipoli, and the Simbio FEM model, by correlating results from each model (e.g., correlations of all the dipole CDR estimates; or correlations across anatomical ROIs). The BEMCP and concentric
spheres work similarly, and the dipoli and Simbio-FEM work similarly. This was with infants using participant-computed realistic models for the compartments and the FEM.</div>
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<div>I am not claiming from this and superiority of the dipoli (or FEM) models over the BEMCP, but I suggest looking at the research literature formally comparing these methods before going much further with BEMCP.</div>
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<div>John</div>
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<div style="font-family:Consolas;font-size:medium">John E. Richards Carolina Distinguished Professor</div>
<div style="font-family:Consolas;font-size:medium">Department of Psychology</div>
<div style="font-family:Consolas;font-size:medium">University of South Carolina</div>
<div style="font-family:Consolas;font-size:medium">Columbia, SC 29208</div>
<div style="font-family:Consolas;font-size:medium">Dept Phone: <a href="tel:803%20777%202079" value="+18037772079" target="_blank">803 777 2079</a></div>
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<div style="font-family:Consolas;font-size:medium">Email: <a href="mailto:richards-john@sc.edu" target="_blank">richards-john@sc.edu</a></div>
<div style="font-family:Consolas;font-size:medium">HTTP: <a href="http://jerlab.psych.sc.edu" target="_blank">jerlab.psych.sc.edu</a></div>
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</blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div><div><div><div><div><div><font face="verdana,sans-serif"><br>Debora Desideri</font><font face="verdana,sans-serif">, PhD Student<br></font></div></div><font face="verdana,sans-serif">BNP Lab - Neurology Department<br></font></div><font face="verdana,sans-serif">University Hospital Tübingen<br></font></div><font face="verdana,sans-serif">Eberhard Karls University Tübingen<br></font></div><font face="verdana,sans-serif">Hoppe-Seyler Str. 3<br></font></div><font face="verdana,sans-serif">D-72076 Tübingen<br></font></div><font face="verdana,sans-serif">Tel: +49 7071/29 80478<br></font><div><div><div><font face="verdana,sans-serif"><br></font></div></div></div></div></div></div></div>
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