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Hearing

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.

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Related Experiment Video

Updated: Jul 18, 2026

Robotic Cochlear Implantation for Direct Cochlear Access

Robotic Cochlear Implantation for Direct Cochlear Access

Published on: June 16, 2022

Totally implantable hearing system: Five-year hearing results.

Jack A Shohet¹, Eric M Kraus², Peter J Catalano³

¹Shohet Ear Associates, Newport Beach, California, U.S.A.

The Laryngoscope

|April 14, 2017

Summary

This study shows a totally implantable hearing system significantly improved hearing outcomes over five years compared to traditional hearing aids. The implant system was also found to be safe for long-term use in patients with sensorineural hearing loss.

Keywords:

Implants active middle ear implant hearing loss middle ear otology quality of life

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Last Updated: Jul 18, 2026

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Published on: June 16, 2022

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Enhanced Cochlear Coverage and Hearing Preservation in High-Frequency Hearing Loss via Electric Acoustic Stimulation with Longer Electrode

Enhanced Cochlear Coverage and Hearing Preservation in High-Frequency Hearing Loss via Electric Acoustic Stimulation with Longer Electrode

Published on: October 11, 2024

Area of Science:

Otolaryngology
Biomedical Engineering
Audiology

Background:

Sensorineural hearing loss affects millions globally, necessitating advanced audiological solutions.
Traditional hearing aids offer some benefit but may not meet all patient needs.
Totally implantable hearing systems represent a novel approach to hearing rehabilitation.

Purpose of the Study:

To evaluate long-term hearing outcomes of a totally implantable hearing system.
To compare the implant's performance against unaided and traditional hearing aid conditions.
To assess the safety and adverse event profile of the implant system over five years.

Main Methods:

A prospective, nonrandomized, multicenter study followed 49 subjects with mild to severe sensorineural hearing loss for five years.
Primary endpoints included speech reception threshold (SRT) and word recognition scores (WRS50s).
Secondary endpoints included WRSs, Abbreviated Profile of Hearing Aid Benefit (APHAB) scores, and safety monitoring (ADEs/SADEs).

Main Results:

The implant demonstrated significant improvements in SRT and WRS compared to baseline aided conditions at all annual follow-ups.
Word recognition scores improved by 17% at the 5-year mark, and APHAB scores showed consistent benefits.
Three Serious Adverse Device Effects (SADEs) and 15 Adverse Device Effects (ADEs) were reported; bone conduction scores increased by 3.7 dB.

Conclusions:

The totally implantable hearing system provided favorable and sustained hearing outcomes over five years compared to conventional hearing aids.
The implant system was determined to be safe for long-term use in the study population.
This technology offers a promising alternative for managing sensorineural hearing loss.