<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi Jeff,<div class=""><br class=""></div><div class="">I am not sure if we have the same understanding of a „source model“, but in the terminology that is familiar to me there is no need to explicitly define a source model. As source model a current dipole is chosen and by standard the Venant appraoch is implemented to model the current dipole, see for example</div><div class=""><br class=""></div><div class="">H. Buchner, G. Knoll, M. Fuchs, A. Rienacker, R. Beckmann, M. Wagner, J. Silny, and ¨
J. Pesch, Inverse localization of electric dipole current sources in finite element models
of the human head, Electroencephalography and Clinical Neurophysiology, 102 (1997),
pp. 267–278.</div><div class="">C. H. Wolters, H. Kostler, C. M ¨ oller, J. H ¨ ardtlein, and A. Anwander ¨ , Numerical
approaches for dipole modeling in finite element method based source analysis., International
Congress Series, 1300 (June 2007), pp. 189–192. ISBN-13:978-0-444-52885-8,
<a href="http://dx.doi.org/10.1016/j.ics.2007.02.014" class="">http://dx.doi.org/10.1016/j.ics.2007.02.014</a>.</div><div class="">J. Vorwerk, M. Clerc, M. Burger, and C. H. Wolters, Comparison of boundary element
and finite element approaches to the EEG forward problem., Biomedizinische Technik.
Biomedical engineering, 57 (2012).</div><div class=""><br class=""></div><div class="">or <a href="http://www.sci.utah.edu/~wolters/PaperWolters/2016/Vorwerk_Dissertation_2016.pdf" class="">http://www.sci.utah.edu/~wolters/PaperWolters/2016/Vorwerk_Dissertation_2016.pdf</a> where you can also find a basic explanation of the FieldTrip-SimBio pipeline.</div><div class=""><br class=""></div><div class="">I hope this helps.</div><div class=""><br class=""></div><div class="">Best,</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>Johannes</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">Am 11.08.2016 um 18:52 schrieb K Jeffrey Eriksen <<a href="mailto:eriksenj@ohsu.edu" class="">eriksenj@ohsu.edu</a>>:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Please ignore my previous request for FEM documentation, as I finally found this:<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><a href="http://www.fieldtriptoolbox.org/tutorial/headmodel_eeg_fem?s%5b%5d=simbio" style="color: purple; text-decoration: underline;" class="">http://www.fieldtriptoolbox.org/tutorial/headmodel_eeg_fem?s[]=simbio</a><o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Reading through the above tutorial, there is no mention of how to define a source model to match an FEM head model. I cannot find this using what I consider as reasonable search terms.<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Please advise how to create a source model in this case.<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Thanks,<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">-Jeff<o:p class=""></o:p></div><div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">_______________________________________________</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">fieldtrip mailing list</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="mailto:fieldtrip@donders.ru.nl" style="color: purple; text-decoration: underline; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">fieldtrip@donders.ru.nl</a><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="https://mailman.science.ru.nl/mailman/listinfo/fieldtrip" style="color: purple; text-decoration: underline; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">https://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a></div></blockquote></div><br class=""></div></body></html>