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<p>Hello,</p>
<p><br>
</p>
<p>Thanks a lot for the interest in SimNIBS!</p>
<p>As mentioned in the FAQ, the osculations in TACS do not change
the electric field spread, but act as a scaling factor as the time
and spatial component are separable</p>
<p>E(x, t) = E(x)I(t).</p>
<p>If you have many electrodes at different phases, it becomes a
little more complicated, but it is still a linear superposition
(please see <a class="doi"
href="https://doi.org/10.1016/j.neuroimage.2017.09.024"
target="_blank" rel="noreferrer noopener" aria-label="Persistent
link using digital object identifier" title="Persistent link
using digital object identifier">https://doi.org/10.1016/j.neuroimage.2017.09.024</a>).
To calculate it you can just use our matlab or python modules to
load simulation results (mesh_load_gmsh4 in matlab or
simnibs.read_msh in python, please see
<a class="moz-txt-link-freetext" href="https://github.com/simnibs/simnibs/tree/master/simnibs/examples/analysis">https://github.com/simnibs/simnibs/tree/master/simnibs/examples/analysis</a>
for examples).</p>
<p><br>
</p>
<p>We also have a module to optimize electrode locations
(<a class="moz-txt-link-freetext" href="https://simnibs.github.io/simnibs/build/html/tutorial/optimization.html">https://simnibs.github.io/simnibs/build/html/tutorial/optimization.html</a>)
and a paper about it (<a class="doi"
href="https://doi.org/10.1016/j.neuroimage.2019.116183"
target="_blank" rel="noreferrer noopener" aria-label="Persistent
link using digital object identifier" title="Persistent link
using digital object identifier">https://doi.org/10.1016/j.neuroimage.2019.116183</a>).</p>
<p><br>
</p>
<p>Best,</p>
<p>Guilherme<br>
</p>
<br>
<p><br>
</p>
<div class="moz-cite-prefix">On 25/06/2020 20.17, du t. (td5u19)
wrote:<br>
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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"> I am a Msc student who is doing my
graduate project based on simNIBS. I want to do the TACs
simulation to know if machine learning can use to find the
right parameters (AC frequency, current, electrode location
etc.) to produce interference at target specific brain area.
So is it possible to visualize the effect brought by AC
frequency change on simNIBS? Or is there any
<span style="font-size:12.0pt;color:black">some code examples
for AC simulation that gives a complete
<span style="background:white">process to scale and sum
electric fields from different simulations to obtain
oscillating AC electric field as you explained in FAQ?</span></span><o:p></o:p></p>
<p class="MsoNormal"> Any further replay is appreciated,
thanks a lot and have a nice day.<o:p></o:p></p>
<p class="MsoNormal">Best, <o:p></o:p></p>
<p class="MsoNormal">Tianyu Du<o:p></o:p></p>
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