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<p>Dear Fabio,</p>
<p><br>
</p>
<p>Thanks for the interest in SimNIBS!</p>
<p><br>
</p>
<p>For modelling extracephalic electrodes, we recommend that you use<i>
heardreco</i> head models
(<a class="moz-txt-link-freetext" href="https://simnibs.github.io/simnibs/build/html/documentation/command_line/headreco.html#headreco-docs">https://simnibs.github.io/simnibs/build/html/documentation/command_line/headreco.html#headreco-docs</a>),
such as our example dataset Ernie, as those head models include
the neck. By placing the electrode in the lower part of the neck,
you can get a good approximation of the should placement.</p>
<p><br>
</p>
<p>Best Regards,</p>
<p>Guilherme<br>
</p>
<div class="moz-cite-prefix">On 10/02/2020 08.58, Fabio Masina
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:20200210085813.Horde.8Dx8pVBICJiuh1CiqnfY9Zn@mailweb.unipd.it">Dear
colleagues,
<br>
<br>
I'm interested in the NIBS fields, especially TMS and tDCS, and my
<br>
background is in psychology and cognitive neuroscience. Recently,
I've
<br>
carried out a tDCS study comparing the behavioral effect of
<br>
High-Definition tDCS vs. classical tDCS. With the definition of
<br>
"classical" I mean a standard tDCS montage with two electrodes (25
cm2
<br>
each), where the anode was placed on C4 (accordingly to the 10-20
<br>
International System of EEG placement) and the return electrode on
the
<br>
left shoulder.
<br>
To this concern, I'd like to model the electrical field of both
the
<br>
montages used in my study but I don't know if there is the
possibility
<br>
to do this modeling, by using the Simnibs, when the tDCS has an
<br>
extracephalic electrode, as in my case.
<br>
Have you some suggestions?
<br>
<br>
Best regards and congratulation on your excellent tool!
<br>
<br>
Fabio Masina
<br>
<br>
<br>
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</blockquote>
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