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The Cochlea

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.

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Updated: Mar 2, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

Word segmentation in phonemically identical and prosodically different sequences using cochlear implants: A case

Anahita Basirat¹

¹a CNRS UMR 9193, Laboratoire de Sciences Cognitives et Sciences Affectives (SCALab) , Université de Lille , Lille , France.

Clinical Linguistics & Phonetics

|May 10, 2017

Summary

Cochlear implant users struggle with speech segmentation using intonation, even with excellent word recognition. This highlights the need for targeted interventions for prosody processing in cochlear implant rehabilitation.

Keywords:

Audiovisual speech cochlear implant prosody word segmentation

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Area of Science:

Auditory Neuroscience
Speech Processing
Rehabilitation Engineering

Background:

Cochlear implants (CIs) restore hearing but often result in variable speech understanding.
Prosody processing, crucial for speech segmentation, remains a challenge for many CI users.
This study investigates speech segmentation abilities using intonational cues in an excellent CI user.

Observation:

An excellent adult cochlear implant user and normal-hearing (NH) subjects performed speech segmentation tasks with minimal pairs like 'l'affiche' vs. 'la fiche'.
Stimuli were presented in auditory-only and audiovisual conditions.
The CI user demonstrated high performance in minimal pair discrimination but performed at chance level in the segmentation task.

Findings:

The CI user's word segmentation ability using intonational cues was significantly impaired compared to NH subjects.
Audiovisual presentation did not enhance the CI user's segmentation performance.
This suggests that even with excellent phoneme/word recognition, intonational cue-based segmentation is difficult for CI users.

Implications:

Current cochlear implant rehabilitation may not adequately address prosody processing deficits.
Assessing and intervening in prosody processing skills are crucial for improving speech communication in CI users.
Further research should explore specific training strategies to enhance prosody perception and utilization in CI users.