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Nouvelle technologie d'identification et d'interprétation des potentiels évoqués auditifs précoces per-opératoires

Abstract : Intra-operative auditory monitoring using auditory brainstem responses (ABR) is rapidly evolving as an important adjunct during surgery in the cerebello-pontine angle to reduce the incidence of auditory deficits. Auditory monitoring alerts the surgeon to ongoing changes in neural function, but the existing techniques have their limitations, suggesting the application of new methods. A specific compact equipment was designed for this purpose. It enables to provide near real time information (within 10 sec) on the ongoing auditory status. The dedicated software includes a dedicated rejection algorithm and an FFT analysis. Recordings have been performed in 23 patients. This study suggests that our technique had significant technical benefits in comparison with other methods of monitoring, although the differences in hearing preservation rates are not statistically significant. To improve the efficacy of intraoperative auditory monitoring auditory direct eight nerve monitoring (DENM) will be combined with auditory brainstem response (ABR). To achieve this goal, a multipoint flexible surface microelectrode for direct cortical recordings with a high spatiotemporal resolution has been fabricated and tested in animals. Recordings of cortical activities elicited by both acoustic and electrical stimulation on the cochlear nucleus have focused on the feasibility. Such electrodes are expected to enhance auditory neural coding understanding and provide new developments in human auditory monitoring.
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Submitted on : Friday, August 27, 2004 - 10:08:16 AM
Last modification on : Thursday, November 19, 2020 - 3:56:07 PM
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  • HAL Id : tel-00006758, version 1



Sébastien Schmerber. Nouvelle technologie d'identification et d'interprétation des potentiels évoqués auditifs précoces per-opératoires. Interface homme-machine [cs.HC]. Université Joseph-Fourier - Grenoble I, 2002. Français. ⟨tel-00006758⟩



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