Comparing a template approach and complex bandpass filtering for single-trial analysis of auditory evoked M100

Alfred Link, Martin Burghoff, Anna Salajegheh, David Poeppel, Lutz Trahms, Clemens Elster

Research output: Contribution to journalArticle

Abstract

Two methods for single-trial analysis were compared, an established parametric template approach and a recently proposed non-parametric method based on complex bandpass filtering. The comparison was carried out by means of pseudo-real simulations based on magnetoencephalography measurements of cortical responses to auditory signals. The comparison focused on amplitude and latency estimation of the M100 response. The results show that both methods are well suited for single-trial analysis of the auditory evoked M100. While both methods performed similarly with respect to latency estimation, the non-parametric approach was observed to be more robust for amplitude estimation. The non-parametric approach can thus be recommended as an additional valuable tool for single-trial analysis.

Original languageEnglish (US)
Pages (from-to)106-110
Number of pages5
JournalBiomedizinische Technik
Volume52
Issue number1
DOIs
StatePublished - Feb 1 2007

Keywords

  • Bandpass filtering
  • Evoked signals
  • Hilbert transform
  • Maximum likelihood
  • Single-trial analysis

ASJC Scopus subject areas

  • Biomedical Engineering

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