CN VIII: Vestibulocochlear
February 15th, 2021
Overview
Roles
- Special sensory - equilibrium (vestibular nerve) and hearing (cochlear nerve)
Vestibulocochlear Nerve Palsy
Abnormalities
- Sensorineural hearing loss
- Vertigo
- Nystagmus
Causes of Vestibulocochlear Nerve Palsy
- Tumour - cerebellopontine angle, internal auditory canal
- Meningitis
- Guillain-Barre
- Sarcoidosis
- Congenital absence
Special Sensory Pathway
Cortical Centre
Primary auditory cortex (temporal lobe)
Primary auditory cortex (temporal lobe)
Nucleus
Pons, medulla
Pons, medulla
Cerebellopontine Angle
Foramen
Internal auditory meatus
Internal auditory meatus
Division
Cochlear Nerve
Spiral Ganglion
Receptors
Organ of Corti
Organ of Corti
Vestibular Nerve
Vestibular Ganglion
Receptors
Vestibulae
Vestibulae
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