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ֱ ϸ, α 10% ũ û ְ ߿ 10% ġḦ ޾ƾ ϸ, 90% ûڴ û⸦ ؾ߸ Ѵٰ մϴ. ׷ û⸦ ν ޾ƾϴ 5% û⸦ ϰ Դϴ.

츮 , ѱ ȸ 95⿡ ǽ 15 3õ 4 û ִٰ մϴ. κ 50 ̻ 30, 40뵵 16.6% ȴٰ մϴ. ó ſ Ǿ û ɰ , , ׸ û ϰ ִ Դϴ.

÷ ϵ , κ Ȱ̳ Ʈ  ν ̻ ÷ϸ ̿ մϴ. û ޴ 鵵 û⸦ ν û ƾ մϴ.

Ҹ ̸ 츮  Ҹ ֳ?

Ҹ ʴ Դϴ. Ŀ ִ ٷ Ҹ Դϴ. Ҹ 鿡 ִ ó ߿ ϴ.

ʹ ũ , , κ ֽϴ. Ҹ ӹ ̵ ޵˴ϴ. ӹ Ҹ Ⱘ Ƿָ ؼ 1 ִ ϴ. ̵ ̸ Ҹ ϴµ ߿ 2-3KHz Ҹ ߰ Ű մϴ.

(Tympanic membrane, Eardrum) ź پ ̸ ̵ Ҹ մϴ. ̼ ֽϴ. ڿ ̼Ұ-ġ(Malleus), (Incus), (Stapes) ʷ پ ־ ̷ ϴµ , ̼Ұ ȿ, (Footplate)  Ҹ ŵϴ. ٸ (Ustachian tube) ִµ ̿ з  ְ ̰ ȯ 輳 ϴ. ҿ ǰ ϰų ħ ų ܺ ⸦ ̰ ϴµ ̷ ߻մϴ.

ü (Stapes) ̰(Cochlea) â(Oval window) ֽϴ. ̼Ұ (Footplate) ̰ ޵Ǹ ̰ (Lymph) Դϴ.

̰ ι ִ · (High frequency sound) ̰ Ϻ(Base)ʿ (Low frequency sound) (Apex)ʿ ˴ϴ. ̰ δ 3(Scala vestibuli, Scala media, Scala tympani) ä ֽϴ. Ҹ Ϻο ̵ϰ ̵ ӿ (Scala media) մϴ.

̰  (Scala media) ִ õ ̼ (Hair cell) Ͽ ڱ ȣ ٲپ ûŰ ϸ 츮 'Ҹ' ִ Դϴ. (Outer Hair Cell) ª (Inner Hair Cell) Ǹ ûŰ ޼ ֽϴ. ȥڼ ūҸ Ҹ ũ Ǿ߸ ֽϴ.

̷ Բ ۿϿ Ҹ ū Ҹ ִ Դϴ.