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MIHA U.

asked • 03/15/20

What is the sound I hear, when i try to move my ears?

I recently discovered that i can move my ears. But when i do that, i hear like a low frequency that changes in amplitude.

So i was wondering if that is the muscles rapidly contracting, which could be possible explanation.

But there was a ted talk about the nerves, and how the signal can be recorded from the brain. And that sound alot like what I hear.

Link to the ted talk: https://youtu.be/rSQNi5sAwuc

Mark D.

The outer ear is called the pinae, if I remember right that is Greek for feather even if our "ears" don't look very feather like. But the pinea just provides a way to gather sound. All of the folds and curves of your outer ear help figuring out the direction of sound. Animals with larger outer ears usually have more sensitive hearing. But hearing "happens" with the inner ear. Your outer ear as it travels inwards (the ear canal) ends in your eardrum or timpanum (think of what the fancy name of a kettle drum is). Sound waves vibrate the timpanum and move the three auditory bones. The first auditory bone the malus is attached to your ear drum, the second, the incus, joins to the third the stapes. The stapes is attached to what is called the cochliar window. The cochlia is the organ that translates sound into nerve impusles which then get interpreted in you brain as a sound. The middle ear, where the auditory ossicles are, is connected to the back of your throat through the eustachian tube. If you have ever flown or driven up or down a mountain you might feel pressure build up and if you open your mouth really wide this opens the eustachian tube so the pressure outside your ear and the middle ear becomes the same. An ear infection is actually when the eustacian tube becomes inflamed and pressure can build up in the middle ear. The sounds you are hearing are your joints and muscles of your jaw and skull moving. Some of the sound is actually virbrations through bones in your skull that your cochlea picks up. Your cochlea has a number of small hairs lining its fluid filled interior. Each one of these hairs is attached to a nerve. Small bits of material also move in this fluid and this gives you a sense of what is up and down. The fluid and these particles are what make you feel dizzy if you spin yourself around. You might not be spinning but the momentum of the fluid is telling your brain that you still are moving.
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03/22/20

1 Expert Answer

By:

Danny R. answered • 03/23/20

Tutor
New to Wyzant

Medical Student, soon to be a doctor!

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