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European Medical and Biological Engineering Confernce

Nordic-Baltic Conference on Biomedical Engineering and Medical Physics

EMBEC 2017, NBC 2017: EMBEC & NBC 2017 pp 1065–1068Cite as

A Case Study of Focal Bayesian EEG Inversion for Whitney Element Source Spaces: Mesh-Based vs. Cartesian Orientations

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Part of the book series: IFMBE Proceedings ((IFMBE,volume 65))

Abstract

This paper concentrates on the Bayesian detection of the neuronal current distributions in the electroencephalography (EEG) imaging of the brain activity. In particular, we focus on a hierarchical maximum a posteriori inversion technique applicable when the lead field matrix is constructed via the finite element method. We utilize the linear Whitney (Raviart-Thomas) basis functions as source currents. In the numerical experiments, the accuracy was investigated using two spherical head models. The results obtained suggest that the interpolation of the dipolar source space does not necessarily bring any advantage for FEM based inverse computations. Furthermore, the divergence conforming Whitney-type sources were found to be sufficient for precise and highly focal Bayesian modeling of dipole-like currents.

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Author information

Authors and Affiliations

  1. Department of Mathematics, Tampere University of Technology, PO Box 692, 33101, Tampere, Finland

    Tuuli Miinalainen & Sampsa Pursiainen

Authors
  1. Tuuli Miinalainen
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  2. Sampsa Pursiainen
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Editor information

Editors and Affiliations

  1. Tampere University of Technology, BioMediTech Institute and Faculty of Biomedical Science and Engineering, Tampere, Finland

    Hannu Eskola

  2. Tampere University of Technology, BioMediTech Institute and Faculty of Biomedical Science and Engineering, Tampere, Etelä-Suomi, Finland

    Outi Väisänen

  3. Tampere University of Technology, BioMediTech Institute and Faculty of Biomedical Science and Engineering, Tampere, Etelä-Suomi, Finland

    Jari Viik

  4. Tampere University of Technology, BioMediTech Institute and Faculty of Biomedical Science and Engineering, Tampere, Etelä-Suomi, Finland

    Jari Hyttinen

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Miinalainen, T., Pursiainen, S. (2018). A Case Study of Focal Bayesian EEG Inversion for Whitney Element Source Spaces: Mesh-Based vs. Cartesian Orientations. In: Eskola, H., Väisänen, O., Viik, J., Hyttinen, J. (eds) EMBEC & NBC 2017. EMBEC NBC 2017 2017. IFMBE Proceedings, vol 65. Springer, Singapore. https://doi.org/10.1007/978-981-10-5122-7_266

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  • DOI: https://doi.org/10.1007/978-981-10-5122-7_266

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-10-5121-0

  • Online ISBN: 978-981-10-5122-7

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