Performance of the Electroencephalography Inverse Problem using Electric Potential Gradient Measurements

N. Von Ellenrieder, C. Muravchik, E. Spinelli, A. Nehorai, J. Roitman, W. Silva, S. Kochen

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

The EEC inverse problem is traditionally solved with measurements from an array of electric potential sensors. In this work we analyze the expected performance if electric potential gradient measurements were used to solve the inverse problem. We use the Cramér-Rao Bound (CRB) to analyze and compare the performance of the two cases. The spatial covariance of the noise is estimated from real EEC measurements.

Keywords

  • Cramér-Rao Bound
  • Electroencephalography
  • Gradient sensor

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