FINALLY. I FOUND OUT.
You know the cochlea (snails in your head with the little hairs that go from high frequency down to low frequency that wiggle when sound waves get pushed in from the ear drum)?
Where does it go? What does that look like?
Just learned: it’s what’s called
Tonotopic map or
There’s a 1:1 relationship between the little hairs in the ear wired up to the brain.
It’s known as: Labelled line theory