I’ve always learned it comes from damaged hair cells inside the ear, how could it be anything but physical? Very surprised it can be picked up with a microphone in an anechoic chamber though
Why would a damaged hair cell make noise?
The hair cell’s whole job is to send neuronal signal when there’s vibration at its specific frequency. It’s entirely conceivable that a cell would get stuck in the ‘send signal’ mode when damaged, just as it can go the other way and send no signal ever anymore.
Right, which would make the owner of the hair percieve a sound that isn’t happening. The novel part is other people being able to hear it too.
If you close your eyes tightly you can induce the perception of color. If you stand in a doorway and lift your arms to the side so that the backs of your hands are pressing against the inside of the door frame, keep pressing for 60 seconds, then step out of the doorway and relax your arms: it’ll feel like your arms are floating.
The body’s systems are complex and part of reliably filtering signal from noise in such systems is establishing a baseline while in a steady state. Our brains are pretty good at filtering out noise but the pressures or degradations which lead to tinnitus seem to trick the brain into accepting some noise as signal.
If you’re looking for a deep dive then the following paper does an excellent job of outling what we know and what our best guesses are so far: https://www.sciencedirect.com/science/article/abs/pii/S0306987724002718
It’s jargon-laden but nothing someone armed with a dictionary can’t handle. 🙂
Right, but I’m not talking about perceiving noise, I’m talking about creating noise.
