Cochlear Nerve - Types of Neurons

Types of Neurons

The cochlear neurons can be divided into two groups: Type I and Type II.

  • Type I neurons make up 90-95% of the neurons and innervate the inner hair cells. They have a relatively large diameter, and are bipolar and myelinated. Each type I axon innervates only a single hair cell, but each hair cell directs its output to an average of 10 nerve fibres
  • Type II cells, which have a relatively small diameter, connect with the outer hair cells, are monopolar and are not myelinated.

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