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Related Experiment Videos

Optimal gain control step sizes for bimodal stimulation.

Dimitar Spirrov¹, Bas van Dijk², Tom Francart¹

¹a ExpORL, Department of Neurosciences , K.U. Leuven , Leuven , Belgium and.

International Journal of Audiology

|November 28, 2017

Summary

This summary is machine-generated.

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Muscle Stimulation Frequency

Muscle Stimulation Frequency

The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
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Bimodal users with cochlear implants (CI) and hearing aids (HA) can now achieve similar loudness perception in both ears. New individualized gain controls ensure each adjustment step creates an equal loudness change, improving user experience.

Area of Science:

Audiology
Biomedical Engineering
Hearing Science

Background:

Cochlear implants (CI) and hearing aids (HA) offer gain control for loudness adjustment in bimodal users.
Disparities in dynamic range between CI and HA lead to unequal loudness changes with identical gain adjustments.
Individualized loudness perception is crucial for effective bimodal hearing device management.

Purpose of the Study:

To develop and validate a method for relating CI and HA gain controls.
To achieve consistent loudness perception changes across both devices for bimodal users.
To individualize loudness control step sizes for optimal bimodal hearing experience.

Main Methods:

Utilized user-specific loudness models to establish a relationship between CI and HA gain controls.

Keywords:

Cochlear implant bimodal gain settings hearing aid loudness models

Related Experiment Videos

Ensured each adjustment step yielded an equivalent change in perceived loudness.

Validated the derived relationships through bimodal loudness balancing experiments.

Main Results:

Applying the new individualized gain control relationship reduced the gain difference to 3.3 dB.
Using equal step sizes resulted in a significantly larger gain difference of 8 dB.
Demonstrated the effectiveness of the individualized approach in achieving balanced loudness perception.

Conclusions:

A method to relate CI and HA controls was successfully developed.
The individualized control strategy ensures similar loudness differences with each adjustment step.
This approach enhances the management of bimodal hearing devices for improved user outcomes.