A comparison between block and smooth modeling in finite element simulations of tDCS

Aprinda Indahlastari, Rosalind Sadleir

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Current density distributions in five selected structures, namely, anterior superior temporal gyrus (ASTG), hippocampus (HIP), inferior frontal gyrus (IFG), occipital lobe (OCC) and pre-central gyrus (PRC) were investigated as part of a comparison between electrostatic finite element models constructed directly from MRI-resolution data (block models), and smoothed tetrahedral finite element models (smooth models). Three electrode configurations were applied, mimicking different tDCS therapies. Smooth model simulations were found to require three times longer to complete. The percentage differences between mean and median current densities of each model type in arbitrarily chosen brain structures ranged from -33.33-48.08%. No clear relationship was found between structure volumes and current density differences between the two model types. Tissue regions nearby the electrodes demonstrated the least percentage differences between block and smooth models. Therefore, block models may be adequate to predict current density values in cortical regions presumed targeted by tDCS.

Original languageEnglish (US)
Title of host publicationProceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3403-3406
Number of pages4
Volume2015-November
ISBN (Print)9781424492718
DOIs
StatePublished - Nov 4 2015
Event37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015 - Milan, Italy
Duration: Aug 25 2015Aug 29 2015

Other

Other37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015
CountryItaly
CityMilan
Period8/25/158/29/15

Fingerprint

Electrodes
Occipital Lobe
Parahippocampal Gyrus
Temporal Lobe
Prefrontal Cortex
Static Electricity
Current density
Brain
Transcranial Direct Current Stimulation
Therapeutics
Magnetic resonance imaging
Electrostatics
Tissue

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Signal Processing
  • Biomedical Engineering
  • Health Informatics

Cite this

Indahlastari, A., & Sadleir, R. (2015). A comparison between block and smooth modeling in finite element simulations of tDCS. In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS (Vol. 2015-November, pp. 3403-3406). [7319123] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EMBC.2015.7319123

A comparison between block and smooth modeling in finite element simulations of tDCS. / Indahlastari, Aprinda; Sadleir, Rosalind.

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. Vol. 2015-November Institute of Electrical and Electronics Engineers Inc., 2015. p. 3403-3406 7319123.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Indahlastari, A & Sadleir, R 2015, A comparison between block and smooth modeling in finite element simulations of tDCS. in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. vol. 2015-November, 7319123, Institute of Electrical and Electronics Engineers Inc., pp. 3403-3406, 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2015, Milan, Italy, 8/25/15. https://doi.org/10.1109/EMBC.2015.7319123
Indahlastari A, Sadleir R. A comparison between block and smooth modeling in finite element simulations of tDCS. In Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. Vol. 2015-November. Institute of Electrical and Electronics Engineers Inc. 2015. p. 3403-3406. 7319123 https://doi.org/10.1109/EMBC.2015.7319123
Indahlastari, Aprinda ; Sadleir, Rosalind. / A comparison between block and smooth modeling in finite element simulations of tDCS. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. Vol. 2015-November Institute of Electrical and Electronics Engineers Inc., 2015. pp. 3403-3406
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