EEG Source Reconstruction Performance as a Function of Skull Conductance Contrast

Sofie Therese Hansen; Lars Kai Hansen

doi:10.1109/ICASSP.2015.7178085

EEG Source Reconstruction Performance as a Function of Skull Conductance Contrast

Sofie Therese Hansen, Lars Kai Hansen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

Through simulated EEG we investigate the effect of the for-ward model’s applied skull:scalp conductivity ratio on the source reconstruction performance. We show that having a higher conductivity ratio generally leads to improvement of the solution. Additionally we see a clear connection between higher conductivity ratios and lower coherence, thus a reduction of the ill-posedness of the EEG inverse problem. Finally we show on real EEG data the stability of the strongest source recovered across conductivity ratios.

Original language	English
Title of host publication	Proceedings of the 40th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2015)
Publisher	IEEE
Publication date	2015
Pages	827-831
ISBN (Print)	978-1-4673-6997-8
DOIs	https://doi.org/10.1109/ICASSP.2015.7178085
Publication status	Published - 2015
Event	2015 IEEE International Conference on Acoustics, Speech and Signal Processing - Brisbane, Australia Duration: 19 Apr 2015 → 24 Apr 2015 Conference number: 40 https://icassp2015.org/

Conference

Conference	2015 IEEE International Conference on Acoustics, Speech and Signal Processing
Number	40
Country/Territory	Australia
City	Brisbane
Period	19/04/2015 → 24/04/2015
Internet address	https://icassp2015.org/

Keywords

EEG source reconstruction
Inverse problem
Forward models
Sparsity
Variational approximation

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10.1109/ICASSP.2015.7178085

HansenUpAccepted author manuscript, 3.97 MB

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title = "EEG Source Reconstruction Performance as a Function of Skull Conductance Contrast",

abstract = "Through simulated EEG we investigate the effect of the for-ward model{\textquoteright}s applied skull:scalp conductivity ratio on the source reconstruction performance. We show that having a higher conductivity ratio generally leads to improvement of the solution. Additionally we see a clear connection between higher conductivity ratios and lower coherence, thus a reduction of the ill-posedness of the EEG inverse problem. Finally we show on real EEG data the stability of the strongest source recovered across conductivity ratios.",

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publisher = "IEEE",

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note = "2015 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2015 ; Conference date: 19-04-2015 Through 24-04-2015",

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Hansen, ST & Hansen, LK 2015, EEG Source Reconstruction Performance as a Function of Skull Conductance Contrast. in Proceedings of the 40th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2015). IEEE, pp. 827-831, 2015 IEEE International Conference on Acoustics, Speech and Signal Processing, Brisbane, Queensland, Australia, 19/04/2015. https://doi.org/10.1109/ICASSP.2015.7178085

EEG Source Reconstruction Performance as a Function of Skull Conductance Contrast. / Hansen, Sofie Therese; Hansen, Lars Kai.
Proceedings of the 40th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2015). IEEE, 2015. p. 827-831.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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KW - EEG source reconstruction

KW - Inverse problem

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KW - Variational approximation

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ER -

EEG Source Reconstruction Performance as a Function of Skull Conductance Contrast

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