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<p>Hi Paul,</p>
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<p>We have a command line tool called <i>mni2subject_coords,</i> which converts mni coordinates into the subject space.</p>
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<p><a href="https://simnibs.github.io/simnibs/build/html/documentation/command_line/mni2subject_coords.html" class="OWAAutoLink" id="LPlnk714326" previewremoved="true">https://simnibs.github.io/simnibs/build/html/documentation/command_line/mni2subject_coords.html</a><br>
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<p>If you type <i>mni2subject_coords -h </i>you'll get information on how to use the tool to convert specific coordinates instead of using .csv files.</p>
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<p>You can then transform the coil positions that are in MNI space to the subject space, set the coil direction for each subject individually, and run the simulation.</p>
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<p>In case you also have the direction in MNI space this can also be transformed to the subject space using the <i style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">mni2subject_coords
</i><span style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">tool, but in this case </span></p>
<p><span style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">you need to create a .csv file with a specific CoilPos tag (see
the help). Let us know if you need help with this.</span></p>
<p><span style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;"><br>
</span></p>
<p><span style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">Best,</span></p>
<p><span style="font-family: Calibri, Helvetica, sans-serif, EmojiFont, "Apple Color Emoji", "Segoe UI Emoji", NotoColorEmoji, "Segoe UI Symbol", "Android Emoji", EmojiSymbols; font-size: 16px;">Oula</span></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Simnibs-discuss <simnibs-discuss-bounces@drcmr.dk> on behalf of Paul Dhami <pdhami06@gmail.com><br>
<b>Sent:</b> Tuesday, August 25, 2020 1:34:48 PM<br>
<b>To:</b> discuss@simnibs.org<br>
<b>Subject:</b> [Simnibs-discuss] E-field modelling using MNI coordinates of where TMS was applied</font>
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<div dir="ltr">Dear SIMNIBS community,
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<div>I am new to SIMNIBS, so apologizes in advance for what may be an easy question.</div>
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<div>In a TMS-EEG study, TMS was used on 4 cortical sites independently. The sites were targeted across all participants using the same MNI coordinates (acquired from the literature). However, I do not have the precise world coordinates of the coil. I only
have the MNI coordinates that were targeted. </div>
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<div>Because I do not have the world coordinates of where the TMS coil was located for each participant (nor the nearest targeted electrode), is E-field modelling with SIMNIBS still possible?</div>
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<div>Any insight would be greatly appreciated.</div>
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<div>Best wishes,</div>
<div>Paul</div>
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