Auditory Neuropathy Spectrum Disorder (ANSD)

A term used to describe a pattern of symptoms in which behavioral or ABR measures suggest significant hearing loss while measures of cochlear function such as otoacoustic emissions appear normal. More technically, a term that describes a pattern of abnormal findings for a number of audiometric measures—e. g., auditory brain stem responses (ABR), pure-tone and speech audiometry, and/or acoustic reflexes, yet normal findings for otoacoustic emissions (OAE). The most common pattern is the absence of an ABR with normal OAE. Formerly called Auditory Neuropathy/Auditory Dyssynchrony (AN/AD) and before 2001 as Auditory Neuropathy (AN).