Midbrain deafness with normal brainstem auditory evoked potentials.
case_series · Level IV
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Abstract
The authors report two cases of patients with word deafness. The word deafness occurred after a head injury for the first patient and after an arterio venous malformation embolization for the second patient. MRI demonstrated bilateral lesions of the inferior colliculi but brainstem auditory-evoked potentials (BAEP) were within normal limits. These cases demonstrated that lesions involving the two inferior colliculi induced pure word deafness but do not affect BAEP.
Medical subject headings
- Evoked Potentials, Auditory, Brain Stem
- Hearing Loss, Sudden
- Mesencephalon