ELI5: Explain Like I'm 5

Otolith

An otolith is a tiny thing inside your ear that helps you balance and know which way is up. It's like a little rock that moves around when you tilt your head or move your body. The movement of the otolith sends signals to your brain, telling it how to keep you balanced and upright. It's an important part of your ability to stand, walk, and move around without falling over. Imagine you have a tiny rock inside your head that helps you stay balanced, that's the otolith!