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Segmentation of auditory brainstem response signals

J Tian1, M Juhola, T Grönfors

  • 1Department of Computer Science and Applied Mathematics, University of Kuopio, Finland.

International Journal of Bio-Medical Computing
|December 1, 1996
PubMed
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This study introduces a reliable linear segmentation method for analyzing auditory brainstem responses. Optimal results for hearing defect detection were achieved with a segment length of 8 samples and fewer than 10 segment classes.

Area of Science:

  • Biomedical Engineering
  • Signal Processing
  • Audiology

Background:

  • Auditory brainstem responses (ABRs) are crucial for diagnosing hearing defects in audiology and otoneurology.
  • Increasing reliance on computer programs for ABR analysis necessitates highly reliable pattern recognition algorithms.
  • Preprocessing steps like filtering and segmentation are essential for accurate ABR signal analysis.

Purpose of the Study:

  • To explore and optimize linear segmentation as a preprocessing technique for biomedical signals, specifically ABRs.
  • To determine the most effective parameters for linear segmentation in the context of ABR analysis.
  • To assess the suitability of clustering for classifying signal segments in pattern recognition.

Main Methods:

  • Investigated linear segmentation by computing slopes of short signal segments.

Related Experiment Videos

  • Evaluated segment lengths and sampling frequencies to identify optimal parameters based on error criteria.
  • Employed clustering techniques to determine the optimal number of segment classes for pattern recognition.

    • Main Results:

    • A segment length of 8 samples at a 50 kHz sampling frequency proved optimal for linear segmentation of ABRs.
    • Clustering analysis indicated that fewer than 10 segment classes are sufficient for effective pattern recognition.
    • The proposed linear segmentation method enhances the reliability of ABR analysis.

    Conclusions:

    • Linear segmentation is a viable and effective preprocessing step for ABR analysis.
    • Optimized segmentation parameters improve the accuracy and reliability of automated hearing defect detection.
    • The findings contribute to the advancement of computational audiology and otoneurology.