Click ABR intensity-latency characteristics in diagnosing conductive and cochlear hearing losses.
A schematic description of the correlation between various pathologies of hearing impairments and the behavior of auditory brainstem responses (ABR) is presented. Conductive pathology and high-frequency cochlear hearing losses prolong wave component latency due to energy loss and hair cell dysfunction. In cases of flat cochlear hearing loss latency is not affected. Prolonged interwave latencies between wave I and wave V indicate eight nerve and brainstem disorders. An algorithm was developed in the form of a flow chart for locating various malfunctions. Fields of wave V intensity-latency functions were designed for the faster detection and more precise evaluation of conductive and cochlear hearing losses.
Steinhoff
H J
HJ
ENT Department, Technical University of Munich, Federal Republic of Germany.
Böhnke
F
F
Janssen
T
T
D000465:Algorithms; D001300:Audiometry, Evoked Response; D001933:Brain Stem / Q000503:physiopathology*; D003937:Diagnosis, Differential; D034381:Hearing Loss / Q000175:diagnosis*; D006314:Hearing Loss, Conductive / Q000175:diagnosis*; D006316:Hearing Loss, High-Frequency / Q000175:diagnosis*; D006801:Humans; D011930:Reaction Time / Q000502:physiology*