Pitch and Loudness Perception by Cochlear Implant Listeners: Psychophysics and Objective Measures

Not Applicable

Terminated

• Conditions: Cochlear Implant Listeners
• Interventions: Device: Cochlear implants

• Registration Number: NCT01284790
• Lead Sponsor: Assistance Publique Hopitaux De Marseille

Brief Summary

Cochlear implants (CIs) have restored some sense of hearing to more than 120 000 people worldwide. While most patients show good scores of speech recognition in quiet, a large majority of them also struggle in more challenging listening situations, such as speech in noise or music. This project aims to understand the basic mechanisms of electrical stimulation of the auditory nerve, in order to identify the important cues that the electrical signal should convey and to possible improve sound perception by CI users.

Detailed Description

This study will take place in the ENT department of La Timone hospital in Marseille, where more than 120 adults have been implanted. Our study will comprise several phases, including (1) temporal coding of pitch, (2) spatial coding of pitch, and (3) loudness perception. Eight adult implant users will be recruited for each of these phases.

Study Timeline

• Study Start: 2011-01
• Study First Submitted: 2011-01-21
• Study First Submitted QC: 2011-01-26
• Study First Posted: 2011-01-27
• Primary Completion: 2012-03
• Study Completion: 2012-03
• Status Verified: 2014-08
• Last Update Submitted: 2014-08-29
• Last Update Posted: 2014-09-01

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 1

Inclusion Criteria

• The adults of more than 18 years old at the beginning of the study without notion of minimal or maximal duration of setting-up(presence).
• The adults WITH cochlear implant listeners .

Exclusion Criteria

• Presence of intrusive disorders of the personality or mental deficiency. Presence of associated driving disorders. Pregnant or breast-feeding woman.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Cochlear implants	Cochlear implants	-

Primary Outcome Measures

Name	Time	Method
Identify waveforms aimed to improve sound perception by CI recipients	2 YEARS

Secondary Outcome Measures

Name	Time	Method
To correlate the results of our measures psychophysiques with recordings électrophysiologiques of the neuronal activity of the hearing nerve.	2 YEARS

Trial Locations

Locations (1)

Assistance Publique Hopitaux de Marseille; 🇫🇷 Marseille, France