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3BHow Your Hearing Works There is more going on in the ear than just hearing, though that one activity is amazing in itself. The ear is part of the body’s mechanism of balance that involves sight, input from the muscles, and the vestibular system of the inner ear. The vestibular system is the central command of balance in our bodies, and if things aren’t functioning correctly in this small part of the inner ear, it can mean big trouble for our whole body. It’s hard to imagine that an area so tiny could control so much! But, the inner ear is responsible not only for hearing, but also for maintaining balance. The vestibular system There are three semi-circular canals in the inner ear and these, along with the utricle and the saccule make up the vestibular system, which controls balance and gives us a sense of our body’s position. If you have ever spun around to make yourself dizzy (or watched someone else do it), you were witnessing this system at work. The fluid in the semi-circular canals act in response to our movements: in this case the spinning. When you stopped spinning, the fluid kept spinning for a moment or two, or longer. If you were spinning for a long time, it gave you that “off-balance” feeling. You essentially played a trick on your vestibular system to make yourself dizzy, and your muscles responded to that trick by functioning incorrectly, and this is what made it difficult for you to stand or walk. Basically, your vestibular system 201 3 Tinnitus Miracl e – Tho mas Co l eman- Page 38 38