[Simnibs-discuss] Difference in Electric field by optimization and simulation

[Beumer, Steven]

Dear SimNibs community,

I was trying to verify the electric field obtained by an optimization with regular simulations.
For a cortical target and 2 4*4cm patches, the resulting locations and currents were fed into a regular simulation and interpolated to the cortical surface.

The obtained magnitude of the electric field differs by approximately a factor of two and I can’t seem to figure out the reason for that.
In the figure below the optimization and simulation are shown with the Electric field plotted on the same scale.

It might be a reasoning error somewhere, but if someone could help me with that, I would be grateful.

Sincerely,

Steven Beumer MSc
[TUe-logo-descriptor-line-scarlet-rgb]
PhD candidate at the Electrical Engineering faculty


PS: For some reason, this issue doesn’t show up with small circular electrodes

[cid:image001.png at 01D95C0B.E3EBD720]

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