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Question

Why do certain sounds make your skin crawl?


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Solution

Sound:

  1. Vibrations produce sound, which is a sort of energy. When an item vibrates, it causes the molecules in the air around it to move. These molecules collide with nearby molecules, forcing them to vibrate as well.
  2. There are some sounds that make one's skin crawl, such as nails on the chalkboard and the shrill sound of a shriek. This occurs because sound waves move from our ears to our brain when we hear a sound.
  3. As a result, sound energy is transformed into nerve impulses.
  4. These nerve impulses travel to the auditory cortex of the temporal lobes of the brain and are processed there.
  5. Our perception of sound is increased by another structure of the brain called amygdala, and is linked with a particular emotion of fear and unpleasantness.
  6. A physical response is evoked such as goosebumps or the sensation that something is crawling on the skin.

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