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Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
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A mobile sound localization setup.

J A Wasmann1, A M Janssen1, M J H Agterberg1,2

  • 1Department of Otorhinolaryngology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Centre, Nijmegen, the Netherlands.

Methodsx
|November 30, 2020
PubMed
Summary
This summary is machine-generated.

This study introduces a mobile sound localization system for assessing auditory spatial perception in diverse populations. The portable setup allows for flexible, in-situ measurements of horizontal and vertical sound localization abilities.

Keywords:
Binaural processingDirectional hearingRemote hearing testSound localization

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Area of Science:

  • Audiology
  • Neuroscience
  • Human Factors Engineering

Background:

  • Accurate sound localization is crucial for auditory perception and spatial awareness.
  • Traditional sound localization testing often requires specialized clinical environments, limiting accessibility for certain populations.
  • Developing mobile, adaptable testing methods is essential for broader research and clinical applications.

Purpose of the Study:

  • To present a novel mobile sound localization setup for sophisticated measurement of auditory spatial performance.
  • To enable researchers to conduct sound localization studies outside of clinical settings, improving accessibility for participants.
  • To facilitate the assessment of both horizontal (binaural) and vertical (monaural) sound localization in children and patients.

Main Methods:

  • A mobile system was developed to present sounds within a partial sphere (horizontal: -70° to 70° azimuth; vertical: -35° to 40° elevation).
  • Participants indicated perceived sound origin using a head-mounted LED, with head movements recorded and visualized in real-time.
  • The setup allows for adjustable complexity to suit various research questions and participant groups, including a playful pointing method for children.

Main Results:

  • The mobile setup successfully measures horizontal and vertical sound localization performance.
  • It allows for testing in participants' natural environments, overcoming previous accessibility barriers.
  • The system provides immediate feedback on localization accuracy through online target response plots.

Conclusions:

  • The developed mobile sound localization setup is a versatile and effective tool for auditory spatial research.
  • It enhances the ability to study sound localization in populations previously difficult to access, such as children and certain patient groups.
  • The setup's adaptability and engaging testing method make it suitable for a wide range of research objectives in audiology and related fields.