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Comment by ljf | Hacker News Reader

This! Said it before here but also consider than right next to each ear drum is a huge artery. When you run you might hear your heart beating in your ears, but generally we totally tune it out. But it is always there.

Once I realised that I could also tune out tinnitus, I did just that - but a big part of that was just not thinking about it/dwelling on it.

Been nearly 20 years now and tinnitus rarely troubles me, in the way it used to really upset and stress me.

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Decades ago I read about NASA's silent room, with the big wood spikes on the walls. All you can hear is your heartbeat and this high pitched whine. NASA figured out the high pitched whine was the nervous system (like, your brain).

I've got some mild tinnitus. I always wonder if it's my brain listening to itself. That little recursive loop is enough to distract me, even if it's not true.

> NASA figured out the high pitched whine was the nervous system (like, your brain).

I’d love to know more about this if you have any info to share.

I wish I could find a better source. My memory is of a wired article, on paper. This touches on the "hiss" from the nervous system - https://www.americanscientist.org/article/quietest-places-in...

Nada Yoga might give some information as well, it's not a new idea.

The sweet sound of you being plugged to a machine in a dream like state where a day takes 1ns.

but that would mean everyone should have tinnitus but not everyone does. I certainly never had it until midlife.

Maybe the cognitive ability to tune it out is what's failing. Old worn down brain issues.

Wait, what happens if the high pitched whine is always there when you’re in a somewhat quiet place? Is that still the nervous system?

It’s self-oscillating

what if the brain just runs an, "event loop" and the frequency is just the sample rate for responding to events?

That would require synchronous processing. In reality you have a trillion async threads.

I always wondered why I could hear my heart beating so hard when I would go on a run, especially pronounced wearing ear-buds.

1. Earbuds muffle external sounds, so you'll more likely notice internal sounds, like swallowing or your heartbeat:

2. Earbuds fill your ear canal, and as your ear canal flexes slightly due to your heartbeat, the earbud rubs against the skin inside your ear, and you hear that.

stronger heart contractions and increased dilation during exercise therefore ear innards picks up on this?

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