Midbrain deafness with normal brainstem auditory evoked potentials.
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.
Vitte
E
E
ENT Department, Hôpital Pitié-Salpêtrière, Paris, France. elizabeth.vitte@psl.ap-hp-hop-paris.fr
Tankéré
F
F
Bernat
I
I
Zouaoui
A
A
Lamas
G
G
Soudant
J
J
D021721:Balloon Occlusion / Q000009:adverse effects; D006259:Craniocerebral Trauma / Q000503:physiopathology; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D005260:Female; D003639:Hearing Loss, Sudden / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000503:physiopathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008636:Mesencephalon / Q000503:physiopathology*; D008875:Middle Aged; D003336:Tectum Mesencephali / Q000503:physiopathology