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Can dipole modelling be improved by removing muscular and ocular artifacts from ictal scalp EEG?

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Abstract
Muscle artifacts and eye movement artifacts distort the EEG and make EEG dipole source localization near the ictal onset of the seizure very difficult and unreliable. Recently, two algorithms to remove these artifacts have been developed and validated. In our study we want to investigate if the multiple dipole model can be used in ictal EEG source localization. Furthermore, we want to investigate whether the use of the dipole model returns better interpretable results when artifacts are suppressed. The EEG dipole source localization was done by using the RAP-MUSIC algorithm. We used the relative residual energy as a goodness of fit for the dipole model. We found that in the unfiltered EEG the relative residual energy was very high, indicating that EEG dipole source localization is heavely affected by the noise. By removing the artifacts, we obtain a lower relative residual energy, which suggests that the multiple dipole model becomes an adequate model for EEG dipole source localization during ictal period.
Keywords
ELECTROENCEPHALOGRAM, SOURCE LOCALIZATION

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MLA
Hallez, Hans et al. “Can Dipole Modelling Be Improved by Removing Muscular and Ocular Artifacts from Ictal Scalp EEG?” 2007 3rd International IEEE/EMBS Conference on Neural Engineering, Vols 1 and 2. New York: IEEE, 2007. 252–255. Print.
APA
Hallez, H., De Vos, M., Phlypo, R., Vanrumste, B., Van Hese, P., D’Asseler, Y., Van Paesschen, W., et al. (2007). Can dipole modelling be improved by removing muscular and ocular artifacts from ictal scalp EEG? 2007 3rd International IEEE/EMBS Conference on Neural Engineering, Vols 1 and 2 (pp. 252–255). Presented at the 3rd International IEEE/EMBS Conference on Neural Engineering, New York: IEEE.
Chicago author-date
Hallez, Hans, Maarten De Vos, Ronald Phlypo, Bart Vanrumste, Peter Van Hese, Yves D’Asseler, Wim Van Paesschen, Sabine Van Huffel, and Ignace Lemahieu. 2007. “Can Dipole Modelling Be Improved by Removing Muscular and Ocular Artifacts from Ictal Scalp EEG?” In 2007 3rd International IEEE/EMBS Conference on Neural Engineering, Vols 1 and 2, 252–255. New York: IEEE.
Chicago author-date (all authors)
Hallez, Hans, Maarten De Vos, Ronald Phlypo, Bart Vanrumste, Peter Van Hese, Yves D’Asseler, Wim Van Paesschen, Sabine Van Huffel, and Ignace Lemahieu. 2007. “Can Dipole Modelling Be Improved by Removing Muscular and Ocular Artifacts from Ictal Scalp EEG?” In 2007 3rd International IEEE/EMBS Conference on Neural Engineering, Vols 1 and 2, 252–255. New York: IEEE.
Vancouver
1.
Hallez H, De Vos M, Phlypo R, Vanrumste B, Van Hese P, D’Asseler Y, et al. Can dipole modelling be improved by removing muscular and ocular artifacts from ictal scalp EEG? 2007 3rd International IEEE/EMBS Conference on Neural Engineering, Vols 1 and 2. New York: IEEE; 2007. p. 252–5.
IEEE
[1]
H. Hallez et al., “Can dipole modelling be improved by removing muscular and ocular artifacts from ictal scalp EEG?,” in 2007 3rd International IEEE/EMBS Conference on Neural Engineering, Vols 1 and 2, Kohala Coast, HI, 2007, pp. 252–255.
@inproceedings{750193,
  abstract     = {Muscle artifacts and eye movement artifacts distort the EEG and make EEG dipole source localization near the ictal onset of the seizure very difficult and unreliable. Recently, two algorithms to remove these artifacts have been developed and validated. In our study we want to investigate if the multiple dipole model can be used in ictal EEG source localization. Furthermore, we want to investigate whether the use of the dipole model returns better interpretable results when artifacts are suppressed. The EEG dipole source localization was done by using the RAP-MUSIC algorithm. We used the relative residual energy as a goodness of fit for the dipole model. We found that in the unfiltered EEG the relative residual energy was very high, indicating that EEG dipole source localization is heavely affected by the noise. By removing the artifacts, we obtain a lower relative residual energy, which suggests that the multiple dipole model becomes an adequate model for EEG dipole source localization during ictal period.},
  author       = {Hallez, Hans and De Vos, Maarten and Phlypo, Ronald and Vanrumste, Bart and Van Hese, Peter and D'Asseler, Yves and Van Paesschen, Wim and Van Huffel, Sabine and Lemahieu, Ignace},
  booktitle    = {2007 3rd International IEEE/EMBS Conference on Neural Engineering, Vols 1 and 2},
  isbn         = {978-1-4244-0791-0},
  keywords     = {ELECTROENCEPHALOGRAM,SOURCE LOCALIZATION},
  language     = {eng},
  location     = {Kohala Coast, HI},
  pages        = {252--255},
  publisher    = {IEEE},
  title        = {Can dipole modelling be improved by removing muscular and ocular artifacts from ictal scalp EEG?},
  year         = {2007},
}

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