Impact of Microphone Positioning on Auditory Performance in Cochlear Implant Users (MICLO)

Civil Hospices of Lyon

Status: Withdrawn

Conditions: Cochlear Prosthesis Implantation

Treatments: Behavioral: Likert scale; Behavioral: Quality of life questionnaire; Behavioral: French Matrix Test; Behavioral: SPHERE protocol; Device: Modification of active microphone positioning

Study type: Interventional

Funder types: Other

Identifiers

NCT04677517

69HCL20_1013

Details and patient eligibility

About

The construction of our auditory space requires several prerequisites, including localization abilities in 3D (azimuth, elevation and distance). These abilities rely on the proper development and functionality of the auditory system to extract various acoustic cues from our environment. Extraction and analysis of these auditory cues are based on the synchronous use of ears, called binaurality. Other natural behaviours are useful to precisely determine the location of a sound source: visual information and head movements.

The slightest anatomical-functional change (e.g. unilateral hearing loss, malformation of the pinna) can disturb spatial hearing abilities. Many patients with hearing loss are fitted with a hearing aid (HA) or a cochlear implant (CI) to ensure the best speech understanding. However, this auditory rehabilitation remains insufficient to restore a good perception of spatial hearing. One of the key point to improve sound localization seems to be microphone positioning on hearing aids. Several questions remain on the optimal microphone positioning.

Sex: All

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Age 18 to 75 inclusive
• Regular follow-up in the Ear Nose and Throat department of the Edouard Herriot hospital in Lyon
• Post-lingual deafness
• Fitted with two Advanced Bionics (AB) cochlear implants (Naïda Q70 or Naïda Q90 processor) Or fitted with one AB cochlear implant and a contralateral hearing aid
• Fitted with the latest implant for more than 1 year
• Normal or corrected vision
• Able to understand experimental instructions
• Affiliated with a social security scheme

Exclusion criteria

• Oculomotor disorder
• Bilateral vestibular areflexia
• Adult subject to a legal protection measure (guardianship, curatorship)

Trial design

Primary purpose: Other

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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0 participants in 1 patient group

Implanted patients

Experimental group

Description:

All the participants are patients with post-lingual deafness and fitted with cochlear implants

Treatment:

Device: Modification of active microphone positioning

Behavioral: SPHERE protocol

Behavioral: French Matrix Test

Behavioral: Quality of life questionnaire

Behavioral: Likert scale