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Headphone may cause veritgo

Discussion in 'Sound Science' started by fubar3, Sep 30, 2011.
  1. fubar3
    I saw this in the newspaper:-

    Researchers Pinpoint the Cause of MRI Vertigo: Machine's Magnetic Field Pushes Fluid in the Inner Ear's Balance Organ

    So our inner ears may are sensitive to magnetic disturbances.  Hmm, I wonder if those powerful magnets in modern headphones could do that? Do audiophiles get off-balance?
  2. fubar3
    Argg!  I just noticed that they can cause dyslexia.... veritgo== vertigo   :)
  3. jjinh
    I surmise no.
  4. wnmnkh Contributor
    If you are really concerned, buy Ultrasone headphones which emit really low ME.
    But still, there isn't much evidence on this topic.
  5. Steve Eddy
    While the magnets are powerful for their size, the strength of the fields they emit aren't even in the same universe as those of an MRI. If they were, they'd stick together and you'd never be able to get them apart.
  6. fubar3
    Birds can see magnetic fields for additional guidance during migration. But us humans think too much so our senses are relatively dulled. However, the researchers found that some or all us have a magnetic fluid in out inner ear. This explains the MRI vertigo.

    Magnets found in disk drives will squish your fingers if placed between them. Earphone magnets are of the same material but smaller. Nobody can prove there is no magnetic effect from them just as nobody can claim that cellphones do not cause brain tumours.
  7. Steve Eddy


    Magnets found in disk drives? yikes.gif
    What disk drives have such powerful magnets, and how do they keep them from destroying the data on the disk?
  8. WarriorAnt
    As far as balance goes I do not suffer vertigo from headphone use per se but I cannot walk while using headphones which is why I do not have a portable rig or use something like the iPod Touch.   If I try to walk while using headphones I lose my balance. I do not know where my feet are or where the ground is.  I will stumble about, end up tripping, bumping into objects or falling.   I have had several MRI's but have never had vertigo during a scan.   
  9. fubar3
    >>Magnets found in disk drives?  What disk drives have such powerful magnets, and how do they keep them from destroying the data on the disk? 

    Take a broken one apart and you will see it is something like a speaker voice coil in principle except that the disk has a moving head that is between the magnets. The head magnets are in the corner where there is minimal effect on the spinning platters.

  10. fubar3
    >>I cannot walk while using headphones

    Say, WarriorAnt, were you chewing gum at the same time? :D
  11. RexAeterna

    yea there is some insane magnets. my grandpa had a fascination of magnets and always order special kinds off of online. he would always ask me to test my strength and see if i can get them off the refrigerator. i couldn't but luckily i knew the secret roll trick lol. had to watch myself as well cause one time i actually pinched a piece of skin off my finger from these small thick magnets when i wasn't being careful. man did it hurt.

    headphone magnets are different and defiantly no where near strong enough to cause any magnetic disturbance in any way.
  12. WarriorAnt


    I know, sounds pretty lame.  You should see what happens when I hear a live classical orchestra.  I sometimes start to drool. 
  13. Steve Eddy

    Ok, I cracked open an old Quantum drive. I see what you're talking about now.

    Yeah, they're pretty powerful alright.

    The key is that there is an identical pair of them stacked one above the other so that the field is concentrated in the space between them where the head actuator coil is situated and is effectively cancelled outside the gap. They're also mounted to some rather thick steel brackets which also provides some additional magnetic shielding.

    Cool! Thanks for goading my curiosity. It reminded me that I'd seen these before many years ago when I was a service tech for a local computer retailer. But it was so long ago I'd completely forgot about it.


  14. fubar3
    What causes MRI vertigo? Machine's magnetic field pushes fluid in ...
    22 Sep 2011 – 22, a team led by Johns Hopkins scientists suggests that MRI's strong magnet pushes on fluid that circulates in the inner ear's balance center, ...
  15. BlackbeardBen
    Note just like the magnetic field in a hard drive, the magnets used in transducers concentrate their flux right where the voice coil is. You'd have to put your head INSIDE a Beyerdynamc Tesla driver to experience a flux similar to that of an MRI machine.

    Any takers on the Tesla implant?

    "Magnetic effect"? In what way, other than the aforementioned ear fluid that is being excited by MRI magnetic fields many orders of magnitude larger than those from consumer devices?

    Look, just like with cell phones we can't just go ahead and say "this might hurt us" and fear it enough that it influences our behavior despite the overwhelming evidence that any effect that such a phenomenon (cell phone EMR, magnetic fields from headphones, etc.) may have, positive or negative, is extremely small. This isn't like Minimata, nor is it like smoking - and it isn't even like the entirely natural yet oh-so-damaging rays of the sun.

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