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Jeanne Zal
Jeanne Zal • 2 years ago

Why alcohol makes your head spin / We have tiny gyroscopes inside each ear that use the effect of gravity on little hairs submerged in fluid to determine our physical orientation.

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Previous pinner: "Hair cell of inner ear: A scanning electron microscope image of the sensory hair bundle from a guinea pig's hearing organ in the inner ear. When vibrations in the liquid in the inner ear causes these to move, nerve signals are sent to the brain, and are interpreted as sound." Me: Okay, guinea pig, not human, but these are the suckers that die off in Meniere's, alas...

  • Allison L. Ashby

    I thought they weren't enitrely sure about that. That there could be miixng of fluids in the semi-circular canals that don't normally mix and become toxic when mixed and intefer with transmisson. It doens't explain why when I have an attack my hearing goes to almost zero and then returns or why my hearing can fluccuate from day to day or sometimes for months. It sucks no matter the cause!

  • Suzi Holler

    Agreed, it does suck big time! I was thinking I had read that the attacks somehow destroy more and more of the hair cells (maybe that toxic mixing you mentioned) and that's why less and less hearing returns as it progresses. I'll have to see if I can find that again...

  • Suzi Holler

    Found it: "What damage is done by Ménière's Disease? 1. Hair cell death: Conventional thought is that repeated attacks of Meniere's kills hair cells in the inner ear. This is a gradual process over years, but frequently resulting in unilateral functional deafness. Cochlear (hearing) hair cells are the most sensitive. Vestibular hair cells seem more resilient but there is also a slow decline in the caloric response in the diseased ear over roughly 15 years (Stahle et al, 1991)." [http://www.tchain.com/otone...]

Menieres: An Inner (Ear) Journey: I Am Safe: Positive Affirmations to Ease Meniere’s Dis-ease

Meniere's Disease / A woman w/menieres -- and lots of other issues, opinions, politics, life, love, etc... Not really a great Menieres site.

Previous pinner: "Cochlea from Inner Ear. Color-enhanced scanning electron micrograph of the inside of a guinea pig inner ear showing the hearing organ, or cochlea. Running along the spiral structure are rows of sensory cells which respond to different frequencies of sound. The whole organ is just a few millimeters long." Me: Granted, it's not human, but it's interesting to see one of the structures and systems causing me such grief!

Meniere’s disease is a condition in which there is an excess of fluid in the inner ear. The excess fluid disturbs the ear’s balance and hearing mechanisms and produces a range of symptoms: • vertigo (a form of dizziness where your surroundings appear to spin) • tinnitus (an abnormal ringing noise inside the ear) • fluctuating hearing loss • a feeling of pressure or fullness in the ear due to fluid build-up

"Middle ear bone. Coloured scanning electron micrograph (SEM) of the human middle ear, showing the stapes (ring-shaped). The stapes is one of three bones (known as the ossicles) in the middle ear that conduct sound waves from the outer ear to the inner ear. Vibrations from the eardrum are passed to the malleus and then the stapes via the incus. The stapes transmits these vibrations to the fluid-filled cochlear of the inner ear where they are converted to nerve impulses. Magnification: x100..."

Previous pinner: "Inner ear hair cells. Coloured scanning electron micrograph (SEM) of sensory hair cells from the inner ear. These cells are surrounded by a fluid called endolymph. As sound enters the ear it causes waves to form in the endolymph, which in turn cause the hairs to move. The movement is converted to an electrical signal that is passed on to the brain. Each crescent-shaped arrangement of hairs lies atop a single cell."

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