Detail publikace

Electrical Source Imaging in Rats: Cortical EEG Performance and Limitations

Originální název

Electrical Source Imaging in Rats: Cortical EEG Performance and Limitations

Anglický název

Electrical Source Imaging in Rats: Cortical EEG Performance and Limitations

Jazyk

en

Originální abstrakt

The goal of the present work is to estimate electric activity within the brain volume based on measured potentials on the rats brain surface. At first, we calculated and analyzed sensitivity volume profile of cortical electrode pairs to address the cortical electrode positioning. Sensitivity volume profiles change rapidly with decreasing of expected minimal depth of the sources. Moreover, the profiles become unreliable in case of very small expected minimal depths, which is, unfortunately, the case of cortical electroencephalogram (EEG). This result was obtained in both analytical and numerical models. Second, appropriate regularization and normalization routines were implemented for minimum norm estimate and beam-forming methods. Third, the inverse methods were applied to localize simulated brain deep sources based on the twelve electrode cortical EEG system.

Anglický abstrakt

The goal of the present work is to estimate electric activity within the brain volume based on measured potentials on the rats brain surface. At first, we calculated and analyzed sensitivity volume profile of cortical electrode pairs to address the cortical electrode positioning. Sensitivity volume profiles change rapidly with decreasing of expected minimal depth of the sources. Moreover, the profiles become unreliable in case of very small expected minimal depths, which is, unfortunately, the case of cortical electroencephalogram (EEG). This result was obtained in both analytical and numerical models. Second, appropriate regularization and normalization routines were implemented for minimum norm estimate and beam-forming methods. Third, the inverse methods were applied to localize simulated brain deep sources based on the twelve electrode cortical EEG system.

Dokumenty

BibTex


@inproceedings{BUT163516,
  author="Vlastimil {Koudelka} and Stanislav {Jiříček} and Václava {Piorecká} and Čestmír {Vejmola} and Tomáš {Páleníček} and Zbyněk {Raida} and Jaroslav {Lačík} and David {Kuřátko} and Daniel {Wojcik}",
  title="Electrical Source Imaging in Rats: Cortical EEG Performance and Limitations",
  annote="The goal of the present work is to estimate electric activity within the brain volume based on measured potentials on the rats brain surface. At first, we calculated and analyzed sensitivity volume profile of cortical electrode pairs to address the cortical electrode positioning. Sensitivity volume profiles change rapidly with decreasing of expected minimal depth of the sources. Moreover, the profiles become unreliable in case of very small expected minimal depths, which is, unfortunately, the case of cortical electroencephalogram (EEG). This result was obtained in both analytical and numerical models. Second, appropriate regularization and normalization routines were implemented for minimum norm estimate and beam-forming methods. Third, the inverse methods were applied to localize simulated brain deep sources based on the twelve electrode cortical EEG system.",
  address="IEEE",
  booktitle="2018 INTERNATIONAL WORKSHOP ON COMPUTING, ELECTROMAGNETICS, AND MACHINE INTELLIGENCE (CEMI)",
  chapter="163516",
  doi="10.1109/CEMI.2018.8610587",
  howpublished="print",
  institution="IEEE",
  year="2018",
  month="november",
  pages="45--46",
  publisher="IEEE",
  type="conference paper"
}