Narrow internal auditory meatus - An idiopathic case confirming the originand pathway of vestibular evoked myogenic potentials in humans

Citation
K. Ito et al., Narrow internal auditory meatus - An idiopathic case confirming the originand pathway of vestibular evoked myogenic potentials in humans, ARCH OTOLAR, 127(3), 2001, pp. 275-278
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Otolaryngology,"da verificare
Journal title
ARCHIVES OF OTOLARYNGOLOGY-HEAD & NECK SURGERY
ISSN journal
0886-4470 → ACNP
Volume
127
Issue
3
Year of publication
2001
Pages
275 - 278
Database
ISI
SICI code
0886-4470(200103)127:3<275:NIAM-A>2.0.ZU;2-S
Abstract
Objective: To confirm the origin and pathway of vestibular evoked myogenic potentials (VEMPs) in humans. Design: Case study. Setting: University hospital. Patients: A patient with a narrow internal auditory meatus (IAM). Main Outcome Measures: Imaging studies and functional studies concerning th e seventh and eighth cranial nerves. Results: Of the 4 nerves in the IAM, all but the cochlear nerve had normal function and normal courses, despite the pronounced narrowing of the IAM. T he facial nerve had a normal diameter, but the vestibular nerves were thinn er. Imaging revealed that the cochlear nerve was absent or extremely thinne d. Both the cochlea and the cochlear nerve showed no function in the affect ed ear, although the VEMPs were evoked normally. Conclusion: Our results definitively support the vestibular origin of VEMPs in humans.