Dizziness & Vertigo – An introduction to the Vestibular System
The vestibular system is a sensory system within our inner ear that helps us to maintain
our balance and helps our brains understand where we are in space. This system works
together with other systems in the body such as vision and sensation to coordinate our eye
movements and postural orientation.
The vestibular system is made up of 3 fluid-filled semicircular canals. Every time we
move our heads, this fluid moves as well. This allows our brains to detect movements such as nodding the head yes, shaking the head no, and moving the head left and right. The vestibular system also contains two other components called the utricle and the saccule. These components are more sensitive to movements such as linear acceleration and tilting side to side.
The vestibular system uses information from each of these components, combined with
our vision and sensation, to coordinate eye movements, neck movements, postural orientation, balance, stability, etc. For example, if you are trying to read something that is moving past you (such as a street sign while you are in a moving vehicle), your system coordinates with your vision to allow you to focus on reading this sign while your head is moving in space.
When the vestibular system is affected (which can happen after concussions, whiplash
injuries, inner ear infections, changes in pressure, etc.) you may feel dizzy, off-balance, or it may seem like the room is spinning. You may experience difficulties focusing on things, increased car sickness, feelings of swaying, or just generally feeling “off.”
Although this can be a very confusing and uncomfortable feeling, physiotherapy can
help! Vestibular rehab has been shown to be extremely effective at reducing feelings of
dizziness, or lack of balance. If you are experiencing issues with your vestibular system, book a vestibular assessment with us today!