Why Do Certain Sounds Make Your Skin Crawl?

There are a few sounds such as nails on the chalkboard, that make one’s skin crawl. This happens because when we hear the sound and the sound waves travel from our ears to the brain. Thus the sound energy is converted into nerve impulse. These nerve impulses travel to the auditory cortex of the temporal lobes of the brain and are processed there. Our perception for sound is increased by another structure of the brain called amygdala, and is linked with a particular emotion of fear and unpleasantness. A physical response is evoked such as goosebumps or the sensation that something is crawling on the skin.

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