Eli5: why is it harder to maintain balance with eyes closed?

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I’m doing some balance exercise and whenever I close my eyes l lose my balance immediately but regain my balance when I open my eyes.

While my eyes are open during the balance exercise I’m not looking at my body or anything in particular so I don’t understand why it matters to my brain if I stare at a white wall or not.

In: Biology

2 Answers

Anonymous 0 Comments

There’s two main things going on. ONE is your eyesight righting yourself. This is the most accurate sense you have, and you’ll use thins for any kind of fine balance. The second is your inner ear fluid. That’s good at knowing what direction is up, but can only get so close, so you use your eyes to supplement that sense.

Interestingly enough, I had a great uncle who had a botched surgery that drained said fluid permanently. With the lights off, he had ZERO sense of what’s up and therefore would fall if he wasn’t touching something that gave him a reference. If you can’t generally feel it, I would check with a doctor, but as long as you can stand in a dark room on flat ground, that’s normal. Doing a handstand or on a balance beam or other balance exercise? You probably need your eyes.

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