Auditory Brainstem Responses with AEP_AUDIX system using an optimized broadband chirp stimulus LEIDY MABEL ALVERO GONZALEZ (
[email protected]) Gaya-Vazquez J, Miret-Fernandez C, Velarde-Reyes E, Torres-Fortuny A, Eimil-Suarez E, Torne-Cabrera Y, Martinez-Montes E. ABSTRACT
RESUMEN
A recent alternative in the generation of Auditory Evoked Response (ABR) has been the use of chirp stimuli developed to compensate for the traveling wave delay in the cochlea. This study examines the usefulness of a rising broadband chirp stimulus (modified version based on chirp stimulus development by Dau et al, 2000) implemented in the AEP-AUDIX system (Havana, Neuronic SA). Two experiments in normal-hearing subjects were performed: in the first, ABR elicited by the click and the broadband chirp were obtained at single moderate stimulus level (60 dB nHL) and repetition rate of 21/s. Wave-V (peak-topeak) amplitude with the chirp-evoked ABR was larger (on the order of 0.20 μV, chirp-to-click amplitude ratio: 1.62, gain in amplitude: 54%) and significant than the obtained with click-evoked ABR (p
