Auditory brainstem responses in a case of high-frequency conductive hearing loss.
Click-evoked auditory brainstem responses were measured in a patient with high-frequency conductive hearing loss. As is typical in cases of conductive hearing loss, Wave I latency was prolonged beyond normal limits. Interpeak latency differences were just below the lower limits of the normal range. The Wave V latency-intensity function, however, was abnormally steep. This pattern is explained by the hypothesis that the slope of the latency-intensity function is determined principally by the configuration of the hearing loss. In cases of high-frequency hearing loss (regardless of the etiology), the response may be dominated by more apical regions of the cochlea at lower intensities and thus have a longer latency.
D001299:Audiometry; D001844:Bone Conduction; D001933:Brain Stem / Q000503:physiopathology*; D002648:Child; D003937:Diagnosis, Differential; D005072:Evoked Potentials, Auditory; D034381:Hearing Loss / Q000503:physiopathology*; D006314:Hearing Loss, Conductive / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D008297:Male