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Semin Neurol 2009; 29(1): 066-073
DOI: 10.1055/s-0028-1124024
© Thieme Medical Publishers

Vestibulocochlear Nerve

Mark E. Landau1 , Kristen C. Barner1
  • 1Neurology Department, Walter Reed Army Medical Center, Washington, District of Columbia
Further Information

Publication History

Publication Date:
12 February 2009 (online)

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ABSTRACT

The vestibulocochlear or eighth cranial nerve (CN VIII) has purely special sensory afferent function. The nerve has two components, the vestibular nerve, that detects head and body motion, and the cochlear nerve that detects sound. The primary receptors that convey information to the vestibular portion of CN VIII are the semicircular canals that detect angular acceleration, and the otolithic organs that detect linear acceleration. The organ of Corti receives auditory signals and conveys its information via the cochlear portion. Processes that affect the receptors or the nerve will cause hearing loss, tinnitus, otalgia, vertigo, oscillopsia, and disequilibrium. In this review, the authors discuss the anatomy of CN VIII, the clinical evaluation of patients with vertigo and hearing loss, and specific disease entities.

KEYWORDS

Vestibulocochlear nerve - cranial nerve - vertigo - acoustic - nystagmus

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Mark E LandauM.D. 

Neurology Department, Walter Reed Army Medical Center, 6900 Georgia Avenue

Washington, DC 20307

Email: Mark.Landau@amedd.army.mil