Placeholder Image

字幕表 動画を再生する

  • As we grow older, we often lose the extreme ends of our hearing spectrum.

  • So how many of the following sounds can you hear?

  • How old are your ears?

  • Okay. If you can hear 8000 Hz, youre both alive and not hearing impaired, but let’s keep raising the frequency.

  • CAN YOU HEAR: 12,000 Hz Average Age: Under 50

  • CAN YOU HEAR: 15,000 Hz Average Age: Under 50

  • CAN YOU HEAR: 16,000 Hz Average Age: Under 30

  • CAN YOU HEAR: 17,000 Hz Average Age: Under 24

  • CAN YOU HEAR: 18,000 Hz Average Age: Under 24

  • CAN YOU HEAR: 19,000 Hz Average Age: Under 20

  • How high could you hear?

  • If you could hear all of those frequencies, youre probably under 20 years old,

  • but that won’t last forever, unlike other organs such as the liver or skin,

  • the inner ear does not have the capacity to regenerate.

  • In your ear, there are thousands of tiny nerve cells called hair cells.

  • These are responsible for picking up different frequencies

  • and sending the signal to the brain where it’s processed.

  • But as you age, the continual exposure to noise and loud sounds can break, bend and destroy these cells.

  • So, why do the high frequencies go first?

  • It turns out that the hair is tuned to high pitches are the first to encounter sound waves.

  • As a result, they experience more stress and tend to degenerate earlier

  • which is why the older you are, the harder it is to hear high pitches.

  • Got a burning question you want answered,

  • ask it in the comments or on Facebook and Twitter, and subscribe for more weekly science videos.

As we grow older, we often lose the extreme ends of our hearing spectrum.

字幕と単語

ワンタップで英和辞典検索 単語をクリックすると、意味が表示されます

B1 中級

あなたの耳は何歳ですか?(聴力テスト) (How Old Are Your Ears? (Hearing Test))

  • 599 42
    Anni に公開 2021 年 01 月 14 日
動画の中の単語