• A case of a central auditory processing disorder was caused by a unilateral low brainstem dysfunction. The diagnostic profile includes normal pure-tone hearing, normal tympanograms, absent stapedial reflexes, poor unilateral speech discrimination, and absent brainstem evoked response recordings on the affected side. History suggests this is a result of an early trauma that resulted in aberrant verbal learning. Specific diagnosis was delayed until a stapedius muscle abnormality suggested central testing.
(Arch Otolaryngol 1981;107:623-625)
Lenhardt ML. Childhood Central Auditory Processing Disorder With Brainstem Evoked Response Verification. Arch Otolaryngol. 1981;107(10):623–625. doi:10.1001/archotol.1981.00790460035011