Article révisé par les pairs
Résumé : Complex stimuli such as two-tone stimuli (f1 and f2) elicit frequency-following responses that reflect phase-locking to the stimulus envelope (f2 - f1) and temporal fine structure at multiple stages of the auditory pathway, from the cochlea to the cortex. The relative contribution of these structures to the scalp-recorded envelope-following response (EFR) remains a matter of debate. Although subcortical sources have been proposed as the main contributors, near-field recordings close to the cochlea contain pre-neural components and have recently been reported in auditory steady-state responses (ASSRs), a version of the EFR used to measure thresholds at the four frequencies (0.5, 1, 2, 4 kHz) most relevant for objective audiogram estimations. The present study evaluated the EFR in 26 auditory neuropathy spectrum disorder (ANSD) cases and 79 children with normal electrophysiological thresholds and distortion product otoacoustic emissions (controls). In addition, this study presents data from a battery of auditory neurophysiological objective tests applied to the 26 ANSD cases.

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