The Neural Pathway from the Ear to the Brain

Nerves connecting with hair cells emerge from the Cochlea as the VIII (Acoustic) nerve.

  • We described the Sensory Neural Unit as a hair cell and the nerve that connects to it. In principle this is true, but in reality, the system is more complex than that.
  • Diagram -- a lateral view of the brain stem .



    Connecting nerves never touch but are separated by a gap called a Synapse.

    The chemistry of the Synapse creates a vital switch which provides inhibition or control of neural pathways.

    Neural function is more a chemical reaction than it is an electrical transmission.

    The Acoustic Nerves enter the brain stem towards the top of the Medulla where most nerves cross to the opposite side.

    The Lateral Lemniscus carries the input and the Reticular formation alerts the Cerebrum that it is coming.