Design of a new system that improves hearing in patients who carry a cochle...(ssor in the implant should be specifical...),Health

Date:3/4/2008

ssor in the implant should be specifically programmed for each patient. In order to do so, a programmer performs some subjective tests on the patient. Carrying out this task can get especially hard with children or non-cooperative patients, whose interaction with the programmer is limited or void. So, the search for an objective measurement which provides the automatic programming for the cochlear implant is one of the main research lines opened by the manufacturers. The Compound Action Potential is included in this aim.

The author of this work, Isaac Manuel lvarez Ruiz, states that the major difficulty in the recording and processing of the Compound Action Potential is the stimulation device, insomuch that the stimulation signal interferes in time and frequency with the recalled potential that is meant to be observed. In his thesis, an algorithm has been developed to allow an evaluation of the quality of a Compound Action Potential recording. This method lets us compare the most commonly used techniques in bibliography, as well as to develop new and improved techniques to reduce the stimulation device, points out the researcher.

The first task at the time of programming the cochlear implant is to decide which electrodes should be activated and subsequently, establish parameters for each one. So, this research has analyzed the relation between the Compound Action Potential and the cochlear implant voice processor programming map. We have found that the appearance of the potential generally involves the electrode connection and not vice versa. According to the parameters of each electrode, it has been found that the information provided by these potentials is insufficient for an automatic adjustment of the processor, in comparison with the results of our researches. Our results prove that the Compound Action Potential allows the establishment of parameters of each electrode regarding the average values of the patient, with acceptable uncertainty lev
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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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