07/04/2015
Dizziness & Vertigo
How is my ear involved with balance and dizziness?
The Ear is a complicated machine that not only helps us hear, but also helps us balance. It has three parts: The outer ear, middle ear and inner ear. The inner ear contains the Cochlea (for hearing) and the Vestibular System.
The Vestibular System detects movements of our head. It has 2 chambers and three semi-circular canals. These chambers and canals are filled with a fluid (Endolymph), and each has a patch of specialized hair cells that are connected to nerves. As we turn or move our heads, the fluid shifts. As the fluid shifts around, the hair cells bend. As the hairs are connected to nerves, whenever they bend,they send messages along the nerve to the brain. This tells the brain that we are moving or turning, in which direction, and how fast.
One of the main jobs of the inner ear is to create a reflex called the “Vestibular Ocular Reflex” or VOR for short. The VOR helps to keep our eyes on a subject while we are moving. Because we have a Vestibular organ in each ear, they work together as a team. When one or both of these Vestibular organs fail to work properly, we may experience a spinning dizziness called Vertigo, or have trouble balancing and walking.
Vestibular Rehabilitation Therapy (VRT) helps to restore gaze stability (i.e., Keep our eyes on whatever it is we are looking at), balance, and helps to decrease symptoms of dizziness, motion sickness, and disequilibrium (feeling off balance).