Behavioral and Electrophysiologic Findings in Two Young Adults with Auditory Neuropathy
Trauma Monthly: 13 (2); 163-168 Article Type: Research Article
P, Motesadi Zarandi
S. Behavioral and Electrophysiologic Findings in Two Young Adults with Auditory Neuropathy,
Online ahead of Print
Introduction:The auditory neuropathy is a disorder characterized by no or severely impaired brainstem responses in presence of cochlear hair cells functions preservation. Speech perception ability of these patients is disproportionate with their hearing sensitivity that results from impairment of temporal processing of auditory stimulus and auditory nerve dys-synchrony. Case Report: The patients were two 19 and 20 years old young women with no history of hearing loss, speech and language difficulties and hereditary or chronic diseases in their family. The auditory neuropathy in these patients was confirmed based on behavioral, electroacoustic and auditory evoked potentials tests. The neurologic, visual and somatosensory evaluations show no sensory and/or motor accompanying problems despite of several years after beginning of disorder. The result of MRI was normal too. Conclusion:According to all evaluations that reveal remarkable loss of speech perception because of eight nerve impairment without other accompanying neurologic disorders, these patients may be considered as two rare cases of pure auditory neuropathy.
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