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Related Concept Videos

The Cochlea01:13

The Cochlea

51.9K
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
51.9K

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Related Experiment Video

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Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
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Determining fitting ranges of various bone conduction hearing aids.

D C P B M van Barneveld1,2, H J W Kok1, J F P Noten1

  • 1Department of Otolaryngology and Head and Neck Surgery, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.

Clinical Otolaryngology : Official Journal of ENT-UK ; Official Journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery
|May 10, 2017
PubMed
Summary

Maximum power output (MPO) data was used to establish fitting ranges for nine bone conduction devices (BCDs) across frequencies. Real-ear measurements were validated for assessing BCD MPO.

Keywords:
bone conduction devicefitting rangemaximum power outputskull simulator

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Area of Science:

  • Audiology
  • Hearing device technology
  • Biomedical engineering

Background:

  • Maximum Power Output (MPO) is crucial for fitting bone conduction devices (BCDs), determining their highest output level and fitting range.
  • Skull simulators can verify MPO for percutaneous BCDs, but not for active or passive transcutaneous devices.
  • Defining fitting ranges requires accurate MPO assessment across different BCD types.

Purpose of the Study:

  • To establish fitting ranges for nine bone conduction devices (BCDs) at various frequencies based on their Maximum Power Output (MPO).
  • To validate the method of assessing BCD MPO using in-ear measurements.
  • To compare MPO across different types of bone conduction devices.

Main Methods:

  • Assessed the MPO of nine distinct BCDs using real-ear measurements and/or skull simulator measurements.
  • Employed the Bland-Altman method for cross-validation of the MPO assessment techniques.
  • Defined fitting ranges based on collected MPO data across seven frequencies.

Main Results:

  • Percutaneous BCDs demonstrated higher MPO levels than active and passive transcutaneous devices, offering a wider dynamic hearing range.
  • Real-ear measurement assessment of MPO was validated, providing a reliable method for transcutaneous devices.
  • Fitting ranges were successfully defined for the nine BCDs studied.

Conclusions:

  • Established fitting ranges for nine bone conduction devices (BCDs) across seven frequencies using MPO data.
  • Validated real-ear measurements as a method for assessing BCD MPO.
  • Highlighted differences in MPO between percutaneous and transcutaneous BCDs, impacting fitting and dynamic range.