Article révisé par les pairs
| Résumé : | The term Auditory Neuropathy was coined by Starr et al. in 1996 to label a peculiar hearing disorder due to poor synchronization of neural activity in the cochlear nerve. Since selective Inner Hair Cells loss or defects of the synapse between these cells and the cochlear nerve can lead to similar signs and symptoms, the condition is now referred to as Auditory Neuropathy/ Auditory Dys-synchrony. The condition reveals itself through a series of paradoxical findings distinguishing it from the usual cochlear hearing losses. Speech comprehension scores are typically poorer than those predicted from the audiograms. Auditory Brainstem Responses (including wave I) cannot be obtained to supra-threshold clicks and Outer Hair Cell responses (Cochlear Microphonic potential and/or Oto-Acoustic Emissions) are preserved despite threshold values associated with the abolition of the Oto-Acoustic Emissions in usual cochlear hearing losses. Estimations of prevalence in the population with confirmed Hearing Loss range from 4 to 11%. |
