<div dir="ltr"><div class="gmail_quote"><div dir="ltr">Dear Fieldtrip community,<br><br>The leadfields I have constructed for my EEG source reconstruction look rather strange. </div><div dir="ltr">You can take a look at them here: <a href="https://drive.google.com/folderview?id=0B9QSyDy3RhMIeFkxcm5kdmxOWVk&usp=drive_web" target="_blank">https://drive.google.com/folderview?id=0B9QSyDy3RhMIeFkxcm5kdmxOWVk&usp=drive_web</a><br></div><div dir="ltr"><div><br></div><div>For a given electrode (red circle), the blue vectors represent the direction and the strength of the leadfield. There are two issues:</div><div>(a) for some subjects there is an expected leadfield gradient' (closer source points have larger vectors), while some others do not show this pattern at all;</div><div>(b) some source points have disproportionately large/wrongly directed vectors.</div><div><br></div><div>This is closely related to a previous fieldtrip discussion: <a href="https://mailman.science.ru.nl/pipermail/fieldtrip/2015-March/009058.html" style="font-size:12.8px" target="_blank">https://mailman.science.ru.nl/pipermail/fieldtrip/2015-March/009058.html</a> , but in that discussion no conclusion/solution was reached.<br></div><div><br></div><div><div>Have you encountered these issues in your EEG source reconstruction and if yes, how/did you manage to solve them?</div><div><br></div><div>Thanks a lot!<br></div><div>Maris<br></div></div></div>
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