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Like the ability to roll one's tongue, here's another little physiological quirk that's surprising for not being universal among us humans - generating a perceived thundering or rumbling by contracting the tensor tympani. This is a small muscle in the middle ear.
I can do it, I've known I can do it since I was a little kid, and I'm amazed to learn I may be in the minority ...
I can do it, I've known I can do it since I was a little kid, and I'm amazed to learn I may be in the minority ...
FULL STORY: https://www.sciencealert.com/some-p...g-sound-in-your-ears-just-by-tensing-a-muscleSome People Can Make a Roaring Sound in Their Ears Just by Tensing a Muscle
Although we humans generally have control of our skeletal musculature, there's at least one we don't always have a handle on. In the middle ear sits the tensor tympani, and it seems most people are unable to contract it voluntarily.
Those that can contract their tensor tympani - a small muscle located above the auditory tube - are privy to a special skill: the action produces a low, thunder-like rumbling in their ears.
This is not a new discovery. Sound being produced by the voluntary contraction of this muscle was discussed on page 1,263 of physiologist Johannes Müller's 1842 text Elements of Physiology Volume 2.
But oftentimes, an experience that may seem normal to you is utterly bizarre to another person, and vice versa. There is, after all, much variation in the category encompassed by the word "human".
A tweet from Italian engineer Massimo, who runs a science Twitter account, has the internet rumbling once again, dividing people into the haves and have-nots - most of whom were previously unaware that the other side even exists. ...