Of all the products the sounds of people, does not capture our attention quite like a good cry. They are an integral part of the horror movie, whether it is ‘thirsty cry of blood at first, Jaws’ Marion Crane infamous shower scream in “Psycho” or Chrissie Watkins. Urla may seem simple, but it really can convey a complex set of emotions. The arsenal of human cry was millions of years of evolution cut through, with subtle shades of volume, timing and diffraction, can signal different things. ancestral cues cries that can be traced back to prehistoric ancestors to share with other primates, using the screams as a key component of their social repertoire. Screams are especially important in societies monkeys. Emory University psychologist Harold Gouzoules is one of the leading experts in the world screaming. He could show how monkey cries to transmit large amounts of information. Various walking at different heights and volumes can have different levels of urgency how to communicate if a fight is simply to be held on or if a predator in the area. The grammar of the monkey screams can be difficult surprising. African apes, for example, have three main enemies: leopards, snakes and eagles. Any type of robbery requires different escape routes. To revoke an eagle, the monkey has to leave space and seeks refuge in the dense bushes. But this would be exactly the wrong answer, if a serpent lurking in the bushes. For this reason, green monkeys a model of different cries have developed that not only serve as a warning, but also to reveal the nature of the predator in their midst. monkey can identify other individual monkeys by their screams. This is very adaptable because they allow the listener to judge the importance of the screamer for the public to facilitate the protection of children and other relatives. Why this terror as monkeys noticed that people have the ability to identify people who know the sound of her screams. People also produce a series of screams: It screams, reflecting the most positive emotions, such as surprise and happiness. And then there are cries of fear, cries of pain, and of course, screams of terror. Urla described along an acoustic dimension to their position known as “roughness.” Roughness is a quality that reflects the speed with which a crying changes or varies in volume. The fastest The volume varies, the “rough” the cry. And the rough is a cry as to the perceived fear. Psychologist David Poeppel watched movies of human scream on brain images to listen to people and found that, unlike other human vocalizations, cries received directly led to the amygdala portion of the brain that processes fear, anger and other intense emotions . And among the plurality of human cries, you’re walking the terror that stand out very clearly. exhibit other unpleasant noises, like a child crying and nails on a chalkboard, some of the same characteristics that make it uncomfortable and frightening screams. Best Screamers survivors makes good evolutionary sense to screams of terror to be drawing attention to themselves; these are the ones that more clearly warn of impending danger. People who could not easily distinguish between the different types of crying, is not able to respond with the appropriate urgency in life or death situations. Over time, this would reduce the frequency of their genes in the population. So we are probably the descendants of people who were good screamers and were also good to read the cries of their fellow human beings. This can help to reduce the perverse pleasure we explained deliberately take us experiences like horror movies and roller coasters scream-inducing. What better way to celebrate the success howls of our prehistoric ancestors? This article is published by the conversation with a Creative Commons license. Read the original article.