Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
권호 표지

EEG Current Source Imaging using VEP Data Recorded inside a 3.0T MRI Magnet

  • Han Jae Y. (Department of Biomedical Engineering, Kyung Hee University) ;
  • Choi Young H. (Department of Biomedical Engineering, Kyung Hee University) ;
  • Im Chang H. (Department of Electrical Engineering, Seoul National University) ;
  • Kim Tae-S. (Department of Biomedical Engineering, Kyung Hee University) ;
  • Lee Soo Y. (Department of Biomedical Engineering, Kyung Hee University)
  • Published : 2005.04.01
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Abstract

We have performed EEG current source imaging on the cortical surface using visual evoked potentials (VEPs) recorded inside a 3.0 T MRI magnet. In order to remove ballistocardiogram (BCG) artifacts in the VEPs, an improved BCG template subtraction technique is devised. Using the cortically constrained current source imaging technique and pattern-reversal visual stimulations, we have obtained current source maps from 10 subjects. To validate the EEG current source imaging inside the magnet, we have compared the current source maps to the ones obtained outside the magnet. The experimental results demonstrate that there is a strong correspondence between the current source maps, proving that current source imaging is feasible with the evoked potentials recorded inside a 3.0 T MRI magnet.

Keywords

References

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