Scientific publications

Auditory brainstem implants: past, present and future prospects

Cervera-Paz FJ, Manrique MJ.
Department of Otorhinolaryngology, Head & Neck Surgery, Clinica Universitaria, University of Navarra, Pamplona, Spain.

Magazine: Acta Neurochirurgica

Date: Jun 1, 2007

Otorhinolaryngology Department [SP]

The purpose of the auditory brainstem implant (ABI) is to directly stimulate the cochlear nucleus complex and offer restoration of hearing in patients suffering from profound retrocochlear sensorineural hearing loss. Electrical stimulation of the auditory pathway via an ABI has been proven to be a safe and effective procedure.

The function of current ABIs is similar to that of cochlear implants in terms of device hardware with the exception of the electrode array and the sound-signal processing mechanism. The main limitation of ABI is that electrical stimulation is performed on the surface of the cochlear nuclei, thereby making impractical the selective activation of deeper layers by corresponding optimal frequencies. In this article, we review the anatomical, and experimental basis of ABIs and the indications, and surgical technique for their implantation.

To the best of our knowledge, we describe the first pathology images of the cochlear nucleus in a patient who had received an ABI.

CITATION  Acta Neurochir Suppl. 2007;97(Pt 2):437-42



The Clínica is the greater private hospital with technological equipment of Spain, all in a single center.

Imagen de un PET, tecnología de vanguardia en la Clínica Universidad de Navarra


The professionals of the Clínica perform continuous research and training, always to the benefit of the patient.

Imagen profesionales de la Clínica Universidad de Navarra


Learn why we are different from other healthcare centers. Quality, speed, comfort and results.

Imagen del edificio de la Clínica Universidad de Navarra