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Dear Thomas,</div>
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I haven't tried it myself yet, but check out the <span class="elementToProof">HArtMuT model:</span></div>
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<span class="elementToProof"> </span><span style="color: rgb(68, 147, 248);" class="elementToProof"><u><a style="color: rgb(68, 147, 248); text-align: left;" rel="nofollow" class="OWAAutoLink" id="OWAb011b909-6645-b57f-5b93-53bd610e882a" href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhartmut.neuro.tu-berlin.de%2F&data=05%7C02%7Cfieldtrip%40science.ru.nl%7C7c5935d7611740b3e78408de6ee5ed7e%7C084578d9400d4a5aa7c7e76ca47af400%7C1%7C0%7C639070130965428162%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=p4gA49y15cfizV1syIGrhZykZapAI9I426MHf4XQ2QU%3D&reserved=0" originalSrc="https://hartmut.neuro.tu-berlin.de/">https://www.hartmut.berlin</a></u></span></div>
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<span class="elementToProof">And associated paper:</span></div>
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<span class="elementToProof"><a href="https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdoi.org%2F10.1088%2F1741-2552%2Faca8ce&data=05%7C02%7Cfieldtrip%40science.ru.nl%7C7c5935d7611740b3e78408de6ee5ed7e%7C084578d9400d4a5aa7c7e76ca47af400%7C1%7C0%7C639070130965484672%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=tZ%2BM6V1ThnHxz56G%2BTj7tErg5%2Fv42eV1%2BYb9ZY7NlwE%3D&reserved=0" originalSrc="http://doi.org/10.1088/1741-2552/aca8ce">http://doi.org/10.1088/1741-2552/aca8ce</a></span></div>
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I'm not sure if it's ready to use with FieldTrip (or EEGLAB) out of the box yet, but maybe with some further hacking/development.</div>
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<span class="elementToProof">There's probably not much else with available code, but there's several other</span> papers about modelling the oculogram or retinogram, e.g.:</div>
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<span class="elementToProof"><a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdoi.org%2F10.1109%2F10.552251&data=05%7C02%7Cfieldtrip%40science.ru.nl%7C7c5935d7611740b3e78408de6ee5ed7e%7C084578d9400d4a5aa7c7e76ca47af400%7C1%7C0%7C639070130965525152%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=fOJuQkU%2F%2FYZowuKtY3fvcE63y9OSMiU66CUjfruDcA0%3D&reserved=0" originalSrc="https://doi.org/10.1109/10.552251">https://doi.org/10.1109/10.552251</a></span></div>
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<span class="elementToProof"><a href="https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fieeexplore.ieee.org%2Fdocument%2F8856323&data=05%7C02%7Cfieldtrip%40science.ru.nl%7C7c5935d7611740b3e78408de6ee5ed7e%7C084578d9400d4a5aa7c7e76ca47af400%7C1%7C0%7C639070130965563307%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=ATKYqeJDj5U3nQI%2By25yVhPZcUxCX5jULgh%2BozhaYRw%3D&reserved=0" originalSrc="https://ieeexplore.ieee.org/document/8856323">https://ieeexplore.ieee.org/document/8856323</a></span></div>
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Depending on what your goal is, I wonder if it might be simpler to 'empirically' determine the ocular lead field with intentional eye movements. Happy to discuss that offline if you like!</div>
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<span class="elementToProof">Cheers,</span></div>
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<span class="elementToProof">Sarang</span></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> fieldtrip <fieldtrip-bounces@science.ru.nl> on behalf of Thomas Koenig via fieldtrip <fieldtrip@science.ru.nl><br>
<b>Sent:</b> Wednesday 18 February 2026 09:59<br>
<b>To:</b> fieldtrip@science.ru.nl <fieldtrip@science.ru.nl><br>
<b>Cc:</b> thomas.koenig@unibe.ch <thomas.koenig@unibe.ch><br>
<b>Subject:</b> [FieldTrip] EEG Leadfield computation for eyeballs</font>
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<p class="x_MsoNormal"><span lang="en-CH" style="font-size:11.0pt">Dear colleagues,</span></p>
<p class="x_MsoNormal"><span lang="en-CH" style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span lang="en-CH" style="font-size:11.0pt">I am looking for a way to compute an EEG lead-field matrix for two single dipoles at the centers of the eyeballs. Has anybody worked on or ideally solved this problem?
</span></p>
<p class="x_MsoNormal"><span lang="en-CH" style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span lang="en-CH" style="font-size:11.0pt">Thanks, Thomas</span></p>
<p class="x_MsoNormal"><span lang="en-CH" style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt"> </span></p>
<p class="x_MsoNormal"><span lang="EN-US" style="font-size:10.0pt; font-family:"Courier New"">Prof. Dr. Thomas Koenig</span></p>
<p class="x_MsoNormal"><span lang="EN-US" style="font-size:10.0pt; font-family:"Courier New"">Translational Research Center</span></p>
<p class="x_MsoNormal"><span lang="EN-US" style="font-size:10.0pt; font-family:"Courier New"">University Hospital of Psychiatry and Psychotherapy</span></p>
<p class="x_MsoNormal"><span lang="EN-US" style="font-size:10.0pt; font-family:"Courier New"">Bolligenstrasse 111</span></p>
<p class="x_MsoNormal"><span lang="EN-US" style="font-size:10.0pt; font-family:"Courier New"">3000 Bern 60</span></p>
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