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- Title
Cochlear implant processor fitting for individual cochlear anatomy.
- Authors
Levin, S. V.; Kuzovkov, V.; Levina, E. A.; Shaporova, A. V.; Sugarova, S. B.
- Abstract
Cochlear implantation uses data on the tonotopic organization of the cochlea in the distribution of signals through the channels of the electrode of the cochlear implant. The more accurate and natural the stimulation of the auditory nerve fibers, the better the perception of speech, sounds and speech intelligibility. Traditionally, when tuning processors, the principle of frequency distribution of electrodes is used, which is close to the tonotopic organization of the cochlea, taking into account the used coding strategy. These average values do not take into account the individual characteristics of the patient's cochlear anatomy. In the FSBI "SPb NII ENT" software was used to process the data of postoperative computed tomography in 3D to determine the geometric dimensions and anatomical features of the cochlea. According to the formulas obtained using the synchrotron, data were obtained on the individual frequency distribution of the studied cochlea, depending on the angular position of the electrode. Based on this data, the processor settings were corrected. Seven patients aged 8 to 36 years were examined using the Med-El cochlear implantation system, Concerto implant with various types of electrodes. Computed tomography of the temporal bones was performed in the standard mode on various devices with a slice thickness of 0.6 mm or less. After the anatomical adjustment, all patients noted a more natural sounding; in 3 patients, the peculiarities of the position of the electrodes were revealed, requiring additional adjustment of the adjustment. Deaf teachers noted an improvement in speech intelligibility. A new tool has appeared that allows you to significantly improve the quality and provide an individual approach to tuning processors after cochlear implantation. Thanks to the sound coding of the lowest frequencies, the electrode reaching the tonotopic location of the dendrites of the auditory nerve at low frequencies, the individual distribution of frequencies on each electrode, maximum speech intelligibility and natural sounding are achieved.
- Subjects
POLAND; COCHLEAR implants; SPEECH perception; COCHLEA; MEDICAL equipment calibration; CONFERENCES &; conventions
- Publication
Journal of Hearing Science, 2022, Vol 12, Issue 1, p158
- ISSN
2083-389X
- Publication type
Article