Scientists have discovered why unpleasant sounds trigger a negative response. When we hear unpleasant sounds such as a fork scraping a plate or nails against a chalkboard, the auditory cortex of the brain and an area of the brain called the amygdala interact to produce a negative response. The auditory cortex processes sound, while the amygdala is responsible for processing emotions such as fear, anger, and pleasure. When we hear an unpleasant sound, the amygdala heightens our perception of the sound. This heightened perception is deemed distressing and memories are formed associating the sound with unpleasantness.
What sounds do you hate??