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Related Concept Videos

The Cochlea01:13

The Cochlea

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.
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by identifying...

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[Cochlear Implantation in Single-Sided Deafness - Six Years of Follow-Up from Diagnosis and Consistent Use, Through Dedicated and Creative Auditory Learning, to the Development of Bilateral Central Processing Abilities].

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Related Experiment Video

Updated: Jul 1, 2026

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
04:32

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Published on: December 20, 2024

Sound localization in patients with unilateral cochlear implants.

Michal Luntz1, Alexander Brodsky, Wasim Watad

  • 1Department of Otolaryngology, Head and Neck Surgery, Bnai Zion Medical Center, The Bruce Rappaport Faculty of Medicine, Technion, Haifa, Israel. michal.luntz@b-zion.org.il

Cochlear Implants International
|September 16, 2008
PubMed
Summary

Totally deaf patients with unilateral cochlear implants can improve sound localization through training. Longer implant use correlates with better ability, with greater gains seen in postlingual users.

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Related Experiment Videos

Last Updated: Jul 1, 2026

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
04:32

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Published on: December 20, 2024

Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
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Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process

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An Automated System for Sound Localization Testing in Hearing-Impaired Listeners
07:52

An Automated System for Sound Localization Testing in Hearing-Impaired Listeners

Published on: March 13, 2026

Area of Science:

  • Audiology
  • Neuroscience
  • Rehabilitation Medicine

Background:

  • Sound localization is crucial for auditory perception and spatial awareness.
  • Unilateral cochlear implantation (CI) presents challenges for binaural hearing and sound localization in totally deaf individuals.

Purpose of the Study:

  • To assess sound localization capabilities in patients with single-sided cochlear implants.
  • To determine if auditory training can enhance sound localization skills in this population.

Main Methods:

  • A controlled case series involving nine patients with monaural CIs.
  • Participants identified sound sources from various directions before and after auditory training.
  • Comparison with control groups of normal-hearing individuals and those with one plugged ear.

Main Results:

  • Initial sound localization scores averaged 41.5, with scores positively correlating with CI duration.
  • Following training (average 6.3 sessions), mean scores significantly improved to 66 (p=0.008).
  • Training-induced improvements were more significant in postlingual CI users compared to prelingual users.

Conclusions:

  • Sound localization ability in totally deaf patients with unilateral CIs develops spontaneously over time.
  • Auditory training demonstrably enhances sound localization performance.
  • Postlingual implantees show greater benefits from training than prelingual implantees.