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IEICE TRANSACTIONS on Information

Enhancing Event-Related Potentials Based on Maximum a Posteriori Estimation with a Spatial Correlation Prior

Hayato MAKI, Tomoki TODA, Sakriani SAKTI, Graham NEUBIG, Satoshi NAKAMURA

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Summary :

In this paper a new method for noise removal from single-trial event-related potentials recorded with a multi-channel electroencephalogram is addressed. An observed signal is separated into multiple signals with a multi-channel Wiener filter whose coefficients are estimated based on parameter estimation of a probabilistic generative model that locally models the amplitude of each separated signal in the time-frequency domain. Effectiveness of using prior information about covariance matrices to estimate model parameters and frequency dependent covariance matrices were shown through an experiment with a simulated event-related potential data set.

Publication
IEICE TRANSACTIONS on Information Vol.E99-D No.6 pp.1437-1446
Publication Date
2016/06/01
Publicized
2016/04/01
Online ISSN
1745-1361
DOI
10.1587/transinf.2015CBP0008
Type of Manuscript
Special Section PAPER (Special Section on Human Cognition and Behavioral Science and Technology)
Category

Authors

Hayato MAKI
  Nara Institute of Science and Technology
Tomoki TODA
  Nara Institute of Science and Technology,Nagoya University
Sakriani SAKTI
  Nara Institute of Science and Technology
Graham NEUBIG
  Nara Institute of Science and Technology
Satoshi NAKAMURA
  Nara Institute of Science and Technology

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