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July 20, 2015 11:36 am PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/AKMJJMtKCTQ/why-screams-are-terrifying.html
Why screams are terrifying
Why are screams so frightening? Because sounds with frequency modulations in 30-150 Hz range have a particular "roughness" to them that activates the fear circuit in the amygdala, according to research published in Current Biology, titled "Human Screams Occupy a Privileged Niche in the Communication Soundscape." Read the rest
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/AKMJJMtKCTQ/why-screams-are-terrifying.html
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