Artifact reduction in magnetoneurography based on time-delayed second- order correlations

Andreas Ziehe, Klaus Muller, Guido Nolte, Bruno Marcel Mackert, Gabriel Curio

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

Artifacts in magnetoneurography data due to endogenous biological noise sources, like the cardiac signal, can be four orders of magnitude higher than the signal of interest. Therefore, it is important to establish effective artifact reduction methods. We propose a blind source separation algorithm using only second-order temporal correlations for cleaning biomagnetic measurements of evoked responses in the peripheral nervous system. The algorithm showed its efficiency by eliminating disturbances originating from biological and technical noise sources and successfully extracting the signal of interest. This yields a significant improvement of the neuro-magnetic source analysis.

Original languageEnglish
Pages (from-to)75-87
Number of pages13
JournalIEEE Transactions on Biomedical Engineering
Volume47
Issue number1
DOIs
Publication statusPublished - 2000 Jan 24
Externally publishedYes

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Keywords

  • Artifact reduction
  • Biomagnetism
  • Biomedical data processing
  • Blind source separation
  • Independent component analysis
  • Magnetoneurography (MNG)

ASJC Scopus subject areas

  • Biomedical Engineering

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