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Exploration objective de l'audition à partir des auditory steady-state responses et adaptation à l'implant cochléaire

Abstract : Among the different objective measurement methods, ASSR are in development and offer multiple advantages. Associated with cochlear implant, this objective method allows evaluation of implant performances and a useful tool for fitting. As a first step, we evaluated performances and capacities of the ASSR method on normal and hearing impaired subjects with four studies. The result confirms that this method allowed an accurate evaluation of auditory thresholds. Moreover, the ASSR amplitude correlates well with the loudness function (Hearing Research) and gives information about loudness recruitment. While, varying one of the stimulation parameters, we can study the impact of binaural stimulation. These results suggest that ASSR could be use as a large tool for the exploration of the auditory system. Then we evaluated this measure on cochlear implanted subjects. A first study validated the physiological origin of the ASSR measured (International Journal of Audiology). Models and measurement of the cochlear implant stimulation in the case of ASSR gave us precious information about the stimulation artefact. With a new ASSR tool, adapt to the specificities of the implant, we validated the measure of ASSR with cochlear implanted subjects.
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https://tel.archives-ouvertes.fr/tel-00413409
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Submitted on : Friday, September 4, 2009 - 9:30:38 AM
Last modification on : Wednesday, November 20, 2019 - 2:44:35 AM
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Mikaël Ménard. Exploration objective de l'audition à partir des auditory steady-state responses et adaptation à l'implant cochléaire. Micro et nanotechnologies/Microélectronique. Université Claude Bernard - Lyon I, 2008. Français. ⟨tel-00413409⟩

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