Even imagining the sound of nails being scraped on a chalkboard is enough to give many of us goosebumps. So why does it have such an effect on most people?
Scientists, Why does the sound of nails on the chalkboard bother us? He had been working on it for a long time.
The results they found are truly astonishing! If you are ready Specifically, why we are disturbed by this sound? Let’s move on to what it is.
First, let’s videotape those who listen to the audio and want to torture themselves:
Why does the sound of nails being scraped on a chalkboard disturb us so much?
The sound produced when nails are scratched on a chalkboard has the same frequency as a baby crying or a human scream. It is even very similar to the warning cry of chimpanzees.
Scientists suggest that this has something to do with survival and triggers a similar response. nail biting sound, physiological response such as increased heart rate It causes an emotional reaction beyond a reflex.
It has something to do with our evolutionary past.
According to researchers, our reactions to sounds we find disturbing are We have instincts to avoid predators from our evolutionary past. It endures. Sounds in the frequency range of 2000-5000 Hz cause the ear canal to resonate.
The part of the brain responsible for emotions may also be involved.
Amygdala
It is also thought that the amygdala, which is responsible for experiencing emotions in the brain, may be one of the reasons why this sound is painful. In a study published in the Journal of Neuroscience, between a part of the brain involved in hearing and the amygdala An increase in communication was seen to be triggered.
Participants were shown 74 different sounds, including nails hammering on a blackboard and the hum of electrical appliances. according to the degree of pleasantness rated.
When they heard an unpleasant sound, there was an interaction between the auditory cortex, which processes the sound, and the amygdala, which processes negative emotions. So it goes to the amygdala, to the auditory cortex. a possible danger signal was given.
In short, whatever the exact reason, the sound of the nail being dragged on the board A primitive instinct comes into play definite.
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