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Tinnitus linked to undetected auditory nerve damage

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Re: Tinnitus linked to undetected auditory nerve damage

#231

Post by pezezin »

drmpeg wrote: post #192
LoganDark wrote: post #80

Earlier quoted context omitted.

15.625KHz to be exact. I can hear this sound quite well, to the point where I prefer not to be in the same building as any CRT that emits it. There are those that don't, mainly newer models I assume. I think it has to do with the exact shape of the waveform that drives the (horizontal part of the) deflection yoke. Some of them are noisier than others.

The exact formula is 4,500,000 / 286 = 15734.265734265... Hz.

That is for NTSC, for PAL the formula is 625*25 = 15625 Hz

Re: Tinnitus linked to undetected auditory nerve damage

#232

Post by jFriedensreich »

What i do not understand is why normal hearing tests were seen as a counter argument to the brain compensation for hering loss theory. If the brain compensated for the loss of nerve or hearing cells, the signal should be back to normal but with more noise, the failure of adaptation of the brain to the noise results in tinnitus. To have patients with normal or nearly normal hearing tests but tinnitus would be expected.

Re: Tinnitus linked to undetected auditory nerve damage

#233

Post by eecc »

janmo wrote: post #70
petersumskas wrote: post #62

I have tinnitus. I had brain surgery to remove an acoustic schwannoma. The doctor said that I would lose all hearing in the ear due to the unavoidable damage to the acoustic nerve. Well, at least that will get rid of the tinnitus, I thought. No such luck! I still have tinnitus. As such I think there may be more to tinnitus than undetected nerve damage. It isn’t clear cut though: I have some hearing in that ear after…

You are not the only one, in fact removing acoustic nerve is known not to fix the tinnitus / sometimes making it worse. The research has has shown so far that it appears the Tinnitus is coming from within the brain, neurons that have lost the input signal from the acoustic nerve aren't stimulated anymore and in response start to emit noise signals on their own.

Makes me wonder if nervous transduction is based on PLL resonant circuits

Re: Tinnitus linked to undetected auditory nerve damage

#234

Post by LoganDark »

idonotknowwhy wrote: post #227
LoganDark wrote: post #223

Earlier quoted context omitted.

> Your nose for example is visible but gets ignored To me, it's anything that's covered in one eye, but visible by the other, that can get "ignored". It's just binocular vision at work. Similar to the blind spot thing you mentioned. I've seen my blood vessels too, but they didn't just flash a light in my eyes, they had me look into a machine that did a full retinal scan. Now that was fun, because it was 15 minutes of…

> It's just binocular vision at work. Agreed, these are just binocular vision. But here's an interesting one. A relative had a pituitary tumor crushing her optic nerve, and went to a specialist who ran some tests as she was seeing Van Gogh style patterns everywhere. It turns out she had no color vision in the periphery, but she didn't know this. It was only when she couldn't correctly identify the color of some light…

That's really cool. It's similar to how I can only read what's in the exact center of my vision, but I don't really notice because I'm always looking at what I'm trying to read. When my eyes move, my brain still maintains the illusion that what I'm reading has not actually moved, I look where I am focusing, so the data is there when I need it.

This is all really cool, honestly.

I can read fine from my left eye, but if I try to read with my right eye, then both eyes will be superimposed, and sometimes I'll get confused when my brain is trying to parse two sentences at once and it forgets which eye it's reading with.

My right eye is defective, lol. Even though it can see perfectly clearly and sharply, my brain just doesn't treat it properly. Everything that relies on having two eyes works fine, like depth perception, but anything that relies on only one eye, can only really be done with my left.

Re: Tinnitus linked to undetected auditory nerve damage

#235

Post by baerrie »

jader201 wrote: post #96

I don’t know if this is a clue, but I can do muscle movements in my head/face/jaw to make the tinnitus worse (only as I make the movements, immediately reverting back to “normal” tinnitus as soon as I relax). Some examples: - jutting my jaw forwards - moving my ears back with my face muscles - pushing downward on the top of my head with my hands Another possible clue: this has been true since I can remember — even as…

I have found that if I meditate and “focus” on the area where my inner ear/behind my ear is eventually I can quiet the tinnitus some or even completely. I’ve been able to reproduce it three or four different times. I imagine the nerve endings shrinking, receding, or calming down, and it causes some relief. Could be psychosomatic but it is repeatable and the effect lasts

Re: Tinnitus linked to undetected auditory nerve damage

#236

Post by RobotToaster »

petersumskas wrote: post #62

I have tinnitus. I had brain surgery to remove an acoustic schwannoma. The doctor said that I would lose all hearing in the ear due to the unavoidable damage to the acoustic nerve. Well, at least that will get rid of the tinnitus, I thought. No such luck! I still have tinnitus. As such I think there may be more to tinnitus than undetected nerve damage. It isn’t clear cut though: I have some hearing in that ear after…

It reminds me of what sometimes happens in an electrical circuit if you disconnect an input and leave it floating.

Re: Tinnitus linked to undetected auditory nerve damage

#237

Post by gonesurfing »

janmo wrote: post #60

Most people having a peeep tone tinnitus including myself can experience complete silence for a few seconds (up to 30) by listening to a tone at the specific frequency of their Tinnitus. For example listen to the following, at a level that it isn't uncomfortable and your Tinnitus might be gone for a short time: https://www.youtube.com/watch?v=qNf9nzvnd1k This is called residual inhibition. You can Google "tinnitus re…

Your advice about not listening to your tinnitus is spot on, but easier said than done. I found the guidance in the book Rewiring Tinnitus really helped me in this respect https://www.amazon.co.uk/Rewiring-Tinnitus-Finally-Relief-Ri...

Re: Tinnitus linked to undetected auditory nerve damage

#238

Post by idonotknowwhy »

thfuran wrote: post #140
makk wrote: post #108

Earlier quoted context omitted.

Some examples: - jutting my jaw forwards - moving my ears back with my face muscles - pushing downward on the top of my head with my hands That's wild. Never tried that before but just did and I can 100% repro.

Only the first and third do anything for me, but both seem to add the same high pitch tone to the mix.

Same here, what the hell? Luckily it goes away as soon as I stop doing it.

Re: Tinnitus linked to undetected auditory nerve damage

#239

Post by ce4 »

idonotknowwhy wrote: post #116
smegger001 wrote: post #106

Earlier quoted context omitted.

yeah i think i do the same thing as you with my ears. a flutter is probably the best description of it i had thought of it as clapping or clicking my ears but that is to sharp a sound to really describe it

I can do this too. It also does the same thing as yawning when your ears get blocked on a plane or driving up a steep hill. It unblocks them.

Stapedius reflex? Some can control this muscle volintarily (me as well), it dampens incoming noise by a few dB to protect the ears.

https://en.m.wikipedia.org/wiki/Acoustic_reflex

Re: Tinnitus linked to undetected auditory nerve damage

#240

Post by flippinfloppin »

schiffern wrote: post #46
jacquesm wrote: post #8

Can't wait. With me it is ups-and-downs, at times it's great for months at a stretch and sometimes it is so bad I can't listen to music (or play). There are many different forms of tinnitus and usually some mechanism or cure operates only on a fraction of all cases so I'm hoping that this is as broad as possible. Note to younger self: stay away from loud concerts.

>Note to younger self: stay away from loud concerts. Or try those "concert earplugs." They reduce the overall sound level while better preserving high and mid sounds. It also reduces the booming sound ('occlusion effect') when talking. I paid $15 for a pair recently, but experimentation shows it's mostly just silicone earplugs with a hole through the center and a small mesh screen. Removing the fancy "audio filter" a…

If the solution to concerts is that you have to protect your ears yourself then I would argue that the concerts themselves should be held accountable.

I have tinnitus and it SUCKS. The people who threw the outdoor music festivals I went to in my 20s should be brought to trial...

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