> the story is that a sound engineer told him the sounds were his bloodstream and his nervous system, but I find it very hard to believe that what he heard was

> the story is that a sound engineer told him the sounds were his bloodstream and his nervous system, but I find it very hard to believe that what he heard was actually either of those things Have you ever spent meaningful time alone in an anechoic chamber? Your ears are similar to your eyes, in that they have mechanisms to adjust to ambient noise (/light) levels. If you are in very deep silence for a long enough time, your brain starts trying to make sense of the sounds you are hearing (which indeed includes your blood flowing in your ears [0]), potentially causing auditory hallucinations. It can be a profound experience. [0] https://nypost.com/2023/02/02/inside-the-worlds-quietest-room-at-microsofts-headquarters/ https://nypost.com/2023/02/02/inside-the-worlds-quietest-roo...