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Related Experiment Videos

Data processing options and response scoring for OAE-based newborn hearing screening.

G Tognola1, F Grandori, P Ravazzani

  • 1CNR Centre of Biomedical Engineering and Department of Biomedical Engineering, Polytechnic of Milan, Italy. tognola@biomed.polimi.it

The Journal of the Acoustical Society of America
|February 24, 2001
PubMed
Summary
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Accurate click-evoked otoacoustic emissions (CEOAEs) scoring depends on how reproducibility is estimated. Broader frequency bands and longer time windows improve accuracy, with two bands at 2.25 and 3.75 kHz yielding optimal results for newborn hearing screening.

Area of Science:

  • Audiology
  • Otoacoustic Emissions
  • Newborn Hearing Screening

Background:

  • Click-evoked otoacoustic emissions (CEOAEs) are crucial for objective hearing assessment in newborns.
  • Current CEOAE scoring relies on emission reproducibility, influenced by subdivision schemes and thresholds.
  • The accuracy of reproducibility estimation significantly impacts screening outcomes.

Purpose of the Study:

  • To investigate factors affecting the accuracy of CEOAE reproducibility estimates.
  • To evaluate how reproducibility estimate accuracy and scoring parameters influence CEOAE outcomes.
  • To optimize subdivision schemes and thresholds for reliable newborn hearing screening.

Main Methods:

  • Simulations using real CEOAEs with added noise to assess reproducibility estimation accuracy.

Related Experiment Videos

  • Analysis of CEOAEs from over 3400 newborns in a clinical setting.
  • Comparison of 12 different frequency band subdivision schemes (1.5-4 kHz) and varying thresholds.

    • Main Results:

    • Reproducibility estimates improve with longer time-windows and broader band-pass filter bandwidths.
    • The referral rate is highly dependent on the subdivision scheme; two bands (2.25 and 3.75 kHz) yielded the best results.
    • Bandwidths exceeding 1 kHz showed the lowest referral rates, while four bands resulted in unstable scoring.

    Conclusions:

    • Time-windowing and band-pass filtering parameters directly impact CEOAE reproducibility estimation accuracy.
    • Optimized subdivision schemes, specifically wider bandwidths, are essential for reducing referral rates in newborn hearing screening.
    • Careful selection of subdivision schemes and thresholds is critical for stable and accurate CEOAE-based hearing screening.