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Design of a new system that improves hearing in patients who carry a cochlear implant
Date:3/4/2008

This release is available in Spanish.

The doctoral thesis of Isaac Manuel lvarez Ruiz has been developed in the Departments of Department of Signal Theory, Telematics, and Communication, and Department of Surgery and its Specialties of the University of Granada, and directed by Professors ngel de la Torre Vega and Manuel Sainz Quevedo. The main aim of this work includes improving the acquisition of Compound Action Potential records, carrying out an application analysis in the cochlear implant programming and studying the distribution of refractory periods for the neuronal population that takes part in the generation of potentials. This doctoral thesis, carried out with the support of the Austrian company Med-El, is very useful for the manufacturers of cochlear implants as the results are a source of information for their present research lines.

The cochlear implant is an electronic device designed to help patients with severe and deep hypoacusis who get very little or no benefit from conventional hearing aids. Patients who use them can detect environmental sounds, most of them are able to understand language with no need of lip-reading, and some of them can even use the phone.

This device is composed of an inner part, implanted surgically, and an outer part. In the inner part we mainly find the stimulus generator and an electrodes-bearing guide inserted all along the cochlea. The outer part is mainly composed of a microphone, a voice processor and a battery unit. So, the signal received by the microphone can be analyzed by the voice processor, which determines the instant in which electrodes should be activated as well as the level of the stimulus.

Specifically

The voice proce
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Contact: Isaac Manuel lvarez Ruiz
isamaru@ugr.es
34-626-186-403
Universidad de Granada
Source:Eurekalert

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