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Modeling accuracy of transcranial current stimulation: Static and quasi-static approximations errors

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Abstract

Transcranial current stimulation is a non-invasive brain stimulation technique producing electric fields in the brain using scalp electrodes. Modeling of electric field induced by transcranial current stimulation has been studied with static, quasi-static (QS) approximations and the full set of Maxwell's equations (i.e., full-wave approach, FW) in order to quantify the error due to these approximations. This comparison helps to choose an appropriate approximation depending on stimulation modalities. The QS approximation shall be preferred to the static one, especially for the field analysis in high-permittivity tissues. The results also show that the error is less than 1% below 10 MHz when comparing the QS approximation to FW modelling.
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Dates and versions

hal-03384093 , version 1 (18-10-2021)

Identifiers

  • HAL Id : hal-03384093 , version 1

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Gabriel Gaugain, Lorette Quéguiner, Maxim Zhadobov, Ronan Sauleau, Julien Modolo, et al.. Modeling accuracy of transcranial current stimulation: Static and quasi-static approximations errors. BioEM 2021, Sep 2021, Ghent, Belgium. ⟨hal-03384093⟩
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