Anatomy and Connections
- Auditory nerve fibers are either bipolar or unipolar.
- The distal projection is called the peripheral process.
- The proximal projection is called the axon.
- Action potentials pass through the soma.
- Both the peripheral process and the axon are myelinated.

Types of Neurons
- Cochlear nerve fibers are classified as type I or type II.
- Type I neurons innervate the inner hair cells.
- Type II neurons innervate the outer hair cells.
- Type I neurons are larger and myelinated.
- Type II neurons are smaller and unmyelinated.

Cochlear Nuclear Complex
- The cochlear nerve terminates in the cochlear nuclear complex.
- The cochlear nucleus is located in the medulla of the brainstem.
- The cochlear nucleus receives ipsilateral afferent input.
- The complex consists of the dorsal cochlear nucleus, anteroventral cochlear nucleus, and posteroventral cochlear nucleus.
- Each cochlear nucleus is tonotopically organised.

Related Concepts
- Cochlear implant
- Auditory Brainstem Response

References
- Palmer, A. R. (1987). Physiology of the cochlear nerve and cochlear nucleus.
- Spoendlin, H., & Schrott, A. (1989). Analysis of the human auditory nerve.

Cochlear nerve (Wikipedia)

The cochlear nerve (also auditory nerve or acoustic nerve) is one of two parts of the vestibulocochlear nerve, a cranial nerve present in amniotes, the other part being the vestibular nerve. The cochlear nerve carries auditory sensory information from the cochlea of the inner ear directly to the brain. The other portion of the vestibulocochlear nerve is the vestibular nerve, which carries spatial orientation information to the brain from the semicircular canals, also known as semicircular ducts.

Cochlear nerve
Diagrammatic longitudinal section of the cochlea. (Cochlear nerve is in center, shown as striped.)
Part of the cochlear division of the acoustic nerve, highly magnified.
Details
FromVestibulocochlear nerve
Identifiers
Latinnervus cochlearis
MeSHD003056
TA98A14.2.01.133
TA26318
FMA53431
Anatomical terms of neuroanatomy
Cochlear nerve (Wiktionary)

English

Noun

cochlear nerve (plural cochlear nerves)

  1. (neuroanatomy) A nerve that arises in the spiral ganglion of the cochlea and carries auditory sensory information from the organ of Corti directly to the brain.
    Hypernym: vestibulocochlear nerve
    Coordinate term: vestibular nerve

Translations

... Read More
chevron-down linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram