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Related Experiment Video

Updated: Oct 26, 2025

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
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Sound source localization is a multisystem process.

William A Yost1, M Torben Pastore1, Michael F Dorman2

  • 1Spatial Hearing Laboratory, Speech and Hearing Science, Arizona State University, PO Box 870102, Tempe, Arizona, 85287, USA.

Acoustical Science and Technology
|July 26, 2021
PubMed
Summary
This summary is machine-generated.

Sound source localization relies on integrating auditory and head movement cues, a multisystem process. This review examines this in normal-hearing individuals and cochlear implant (CI) users, highlighting movement

Keywords:
Auditory-spatial cuesCochlear implantsHead-position cuesSound source localization

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Area of Science:

  • Auditory perception
  • Neuroscience
  • Biomedical engineering

Background:

  • Sound source localization is crucial for auditory scene analysis.
  • Movement and head position significantly influence sound localization.
  • Cochlear implants (CIs) alter auditory spatial processing.

Purpose of the Study:

  • To review research on sound source localization in moving normal-hearing listeners and cochlear implant (CI) users.
  • To emphasize the multisystem nature of sound localization, integrating auditory-spatial and head-position cues.
  • To summarize findings across various CI configurations (single, bilateral, bimodal, single-sided deafness).

Main Methods:

  • Review of published and presented data from studies involving normal-hearing listeners and CI patients.
  • Analysis of research on the Wallach Azimuth Illusion and rotational effects.
  • Examination of localization performance in stationary and moving CI users, including head rotation.

Main Results:

  • Sound source localization is a multisystem process requiring integration of auditory-spatial and head-position information.
  • Normal-hearing listeners exhibit specific localization behaviors under rotation (e.g., Wallach Azimuth Illusion).
  • CI users' localization abilities vary with implant configuration and head movement, with head rotation being a key factor.

Conclusions:

  • Effective sound source localization necessitates the integration of multiple sensory inputs and motor systems.
  • Understanding localization in CI users is critical for improving their spatial hearing capabilities.
  • Future research should continue to explore the dynamic interplay of auditory cues and head movements in impaired hearing systems.