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Implant cochléaire

Centre québécois d'expertise en implant cochléaire (v.a.)

Mots clefs

"Centre québécois d'expertise en implant cochléaire", cochlear, "cochlear implant", "Cochlear implant Program", implant, Québec



The Centre québécois d’expertise en implant cochléaire combines the forces of two Québec City institutions : the CHU de Québec-Université Laval, Hôtel-Dieu de Québec (HDQ), and the Institut de réadaptation en déficience physique de Québec (IRDPQ) of the CIUSSS de la Capitale‑Nationale. It is staffed by professionals from various disciplines, including ENT, audiology, speech language pathology, psychology, social work, special education, and technical support. Its role is to select candidates, provide training to the centres concerned, offer practical internships, encourage interaction between stakeholders, and organize special events that support knowledge-sharing.

The medical aspect (surgeries and medical follow-ups) and the initial programming are done by the HDQ, which is the only hospital in Québec accredited by the Ministère de la Santé et des Services sociaux to perform cochlear implants.
The IRDPQ works with the HDQ to ensure an optimal level of initial programming. It is also the supraregional centre for eastern Québec and oversees the intensive functional rehabilitation of users in this region.

To remain on the cutting edge of cochlear implant technology, the Centre d’expertise conducts research in collaboration with Université Laval. It also encourages its team members to improve and perfect their knowledge through the regular attendance of conferences, congresses, seminars and training sessions around the world. 

Are you a candidate for a cochlear implant? 




Dr. Pierre Ferron, ENT specialist, performs the first cochlear implant surgery at HDQ.


HDQ and the IRDPQ join forces on the Programme québécois pour l’implant cochléaire (Québec cochlear implant program) to offer comprehensive cochlear implant services.

Dr. Ferron operates on the first child in Canada to receive a multielectrode cochlear implant.


Dr. Ferron installs a cochlear implant in a 5-month-old baby, a world first.


A research study allows people with a visual impairment to receive bilateral cochlear implants.


Another research study on bilateral implantation gets underway in Québec City, this time on young children.

The first auditory brainstem implant is installed in Québec City, at Hôpital L’Enfant-Jésus.


The program is granted formal recognition under the name of Centre québécois d’expertise en implant cochléaire.

In order to offer quality services as close as possible to users’ homes, other regional rehabilitation centres can now provide intensive functional rehabilitation services (following initial programming).


Dr. Bussières operates on the oldest person in Québec to receive a cochlear implant, a 90-year-old woman.


Dr. Bussières operates on a 4 1/2-month-old baby, who remains one of the youngest children in the world to receive a cochlear implant.

Bilateral implantation is now covered in Québec by the Ministère de la Santé et des Services sociaux, in limited numbers and according to certain criteria.


The first cochlear implantation surgeries are performed for people with single-sided deafness and tinnitus as part of a research study.



Early activation of cochlear implants. For the first time in North America, cochlear implants are activated the day after surgery.



Nearly 3300 cochlear implantation surgeries have been performed to date, including on the youngest patient, who was 4 months old, and one the oldest patient, who was over 91.

To learn more about the history of cochlear implantation, you can consult the article “Petite histoire de l'implant,” published in the journal Sourdine, no. 221, December 2017. This article is taken from the video “Le moulin à sons,” presented at the 3e Colloque québécois sur l’implant cochléaire (3rd  Québec conference on cochlear implantation) on May 30, 2014, to mark the 30th anniversary of the first cochlear implant in Québec.

Click here to watch Le moulin à sons 

Team Members

Surgeons (ENT)

Dr Richard Bussières (Director)
Dr Mathieu Côté
Dr Daniel Philippon
Dr Mathieu Trudel

Audiologists (Programming)

Valérie Audet
Julie Belzil
Francis Comtois
Sandra Fortin
Amélie Gaudreault
Jérôme-Olivier Lebrun
Marie-Ève Rochon
Nicolas Rouleau

Director of technical support

France Bouvry

Administrative staff

Nicole Gagnon (L'HDQ)
Fabienne Astrou (IRDPQ)

Audiologists (Rehabilitation)

Catherine Champagne
Mélanie Laferrière
Maryse Landry
Isabelle Millette
Geneviève Tremblay

Speech therapists (Rehabilitation)

Myriam Adam
Anne-Marie Bégin
Mélissa Dostie

Psychologists (Rehabilitation)

Caroline Guay
Geneviève Mainville
Anne Rochefort

Specialized educators (Rehabilitation)

Élizabeth Arsenault
Caroline Couture
Caroline Gingras
Mathilde Maheu-Lessard

Social worker (Rehabilitation)

Marie-Hélène Gravel-Grenier


François Bergeron (Université Laval et CIRRIS)
Louise Duchesne (UQTR et CIRRIS)

Research and Development

Ongoing research studies : 


  1. Implantation in single-sided deafness/tinnitus.

  2. Benefits in speech perception in noise with signal processing features of the Naída CI Q90 sound processor.

  3. French adaptation of the Pediatric AzBio sentence corpus.

Find out more information about our presentations/publications.

1- Implantation in single-sided deafness/tinnitus.

Anthony Lambert, Mathieu Côté, Richard Bussières, François Bergeron.

The objective of the study is to explore the benefits of cochlear implantation with respect to tinnitus, auditory performance, and quality of life in patients with single-sided deafness and tinnitus.

The recognized surgical indications for cochlear implantation are primarily severe-to-profound bilateral deafness. In adults, an improvement in auditory performance is clearly established. In children, implantation favours the development of speech, language and communication.

Given the functional benefits of binaural hearing, bilateral cochlear implantation is currently gaining in popularity. Studies show improvements in sound localization and speech perception, especially in the presence of competing noise.

Ipsilateral tinnitus presents a therapeutic challenge in people with single-sided deafness, making it difficult to use the usual masking techniques. Cochlear implantation could be a suitable alternative.

In keeping with the principles of tinnitus management and the development of bilateral implantation, this specific population could potentially benefit from an implant that offers them the benefits of binaural hearing while also lessening the intensity of their tinnitus.

2- Benefits in speech perception in noise with signal processing features of the Naída CI Q90 sound processor.

Bergeron, F., Lemolton, A., Agrawal, S.

The Naída CI Q90 sound processor from Advanced Bionics (AB) incorporates new sound processing algorithms based on the technology used in Phonak hearing aids, which were developed and adapted for use with cochlear implants. These algorithms include an adaptive acoustic beamforming system, called UltraZoom, designed to improve auditory performance in noise, in particular when the speaker is directly in front of the person with hearing loss. The Binaural VoiceStream Technology (BVST) streams data wirelessly between two Naída sound processors (bilateral implants) or between a Naída CI sound processor and a Naída hearing aid (bimodal device). Wireless transmission between ears forms a third-order acoustic beam through the use of four microphones (two in each ear). This additional directional beamformer (called StereoZoom) should further improve speech comprehension in noisy environments. The BVST also delivers the signal received in one ear to the contralateral ear, allowing for better hearing when using the phone (DuoPhone feature) or in situations where the signal desired may not be in front of the listener (for example, when driving a car; ZoomControl feature). The BVST allows people with a single implant to use a CROS wireless hearing aid in the non-implanted ear to transmit sounds from this ear to the Naída CI Q70/90 sound processor on the implanted side.

These characteristics are designed to further improve the auditory benefits of cochlear implantation for people with severe hearing loss. According to the perspective of evidence-based practice, it is essential to document the auditory benefits related to the application of these characteristics. The data collected will help to confirm the efficacy of these new options for cochlear implant users, support clinical decisions related to the implementation of these characteristics, and help to establish guidelines for selecting the best options on an individual basis. 

Objectives :
1- Assess the benefits of the Naída CI Q90 sound processor’s directional technology in a common but difficult listening situation in people with a unilateral implant.
2- Assess the additional gains provided by a CROS hearing aid for these people in the same daily environment.

3- French adaptation of the Pediatric AzBio sentence corpus.

The improvement of auditory perception is one of the main objectives of audiology interventions in the hearing-impaired population. Several tests are available to guide and assess the efficacy of these interventions. Ideally, these tests should measure the complex abilities used by hearing-impaired people on a daily basis.
The AzBio Sentence Test was developed to :
1- provide unbiased patient assessments based on representative sentences from daily life,
2- enable assessment across a wide variety of conditions,
3- create sentence lists with an equivalent level of difficulty to enable intra-individual comparison.
4- provide an estimate of performance consistent with the patient’s perceived performance in daily life (Spahr et al., 2012).
Since its introduction, the AzBio Sentence Test has been widely used by English-speaking cochlear implant teams, in particular, because of the high level of complexity of the material, including a high level of language, the use of several speakers, and masking noise consisting of multiple talkers, which prevents the ceiling effects often seen with other assessment tools. Work was recently done to develop and standardize an international French version for adults (Bergeron et al., 2016). The adaptation of the pediatric version of the original AzBio Sentence Test (Spahr et al., 2014) proposed by this project is a complement to this work. 

Objectives :
The goal of this project is to continue adapting the AzBio Sentence Test to produce an international French version. This phase targets the pediatric version of the test. 

The specific objectives are :
1- Create a corpus of French sentences.
2- Validate the corpus with French-speaking children in kindergarten and grade one.
3- Generate sentence lists from the validated corpus.
4- Verify the equivalence of the lists with hearing-impaired listeners.
This work is needed to provide researchers and clinicians with a reference tool for establishing the efficacy of technological/therapeutic interventions in deaf children. This practice is consistent with the contemporary evidence-based medicine approach whereby decision-making must be based on interventions that are proven effective.

Dernière révision du contenu : le 13 juin 2022

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