Anatomy of the Vestibular System

The vestibular system is a sensory system which helps keep a person's gaze and balance stable whenever the head is moved. It works together with the other senses like vision and joint position to help maintain your balance.

The vestibular system is also known as the inner ear. It has several different components including:

  • 3 semicircular canals
  • A central chamber called the 'Vestibule'
  • The cochlear for hearing
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How does the Vestibular System work?

These components work together to help you to maintain your balance and vision, particularly when moving. The vestibular system does this through:

  • Detecting the speed and direction of head movement
  • Detecting acceleration (e.g. of a car propelling forward or in a lift)
  • Detecting orientation with respect to gravity

Common Signs & Symptons of Vestibular Conditions

  • Vertigo (false sense of motion - spinning, rocking, swaying, bobbing etc.)
  • Dizziness (lightheaded, giddy, woozy, disorientated etc.)
  • Nausea and/or vomiting
  • Blurred or jumpy vision
  • Imbalance
  • Headaches or migraines
  • Neck pain and/or stiffness
  • Hearing loss, tinnitus (ringing in ears), ear fullness, pain or pressure
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