Handshake brings people a lot of fun

 Neuroscientists have investigated how people react to the gesture ready for contact.
Researchers at the Beckmann Institute, University of Illinois (USA) figured out what the neurological mechanisms involved in the ritual of welcoming handshake. It is believed that the custom of handshaking comes from ancient times. Then it was a demonstration of the fact that the man in the hand no weapons. Currently, context has changed, but the meaning remains the same: a handshake says about openness interlocutors and their readiness for contact, writes zemladom.org .

In the experiment, 18 men and women watched silent video, which was played out a business meeting between two people. In some cases, a meeting followed by a hearty handshake, others - to shake hands somehow evaded. Simultaneously, the fMRI brain scans of viewers.
It turned out that the first picture is actively responded three areas of the brain responsible for emotions: the amygdala, the superior temporal sulcus cortex and pleasure center. When viewing the second picture - the zones remained calm.
 
Scientists have refined the theory of "six handshakes"
 
Scientists from the University of Milan with the help of social network Facebook have not only confirm the accuracy, but also to improve the so-called theory of six handshakes.
 
Recall that the theory of "six handshakes" in 1929 put forward the fiction Fridesh Carinthia. The writer realized that the world is so cramped, they had all known each other through a small number of intermediaries: in five people, or six handshakes. In the 1960s, the theory was documented by the work of American psychologist Stanley Milgram and Jeffrey Travers. The experiment was conducted in the U.S., in two small towns, the inhabitants of which were distributed to 300 envelopes with a message for one person.
 
It should be noted that this letter was allowed to pass only through their relatives or friends. At the end of the experiment the addressee received 60 envelopes. As a result of the calculations showed that each envelope "passed through the hands of" an average of five people, writes innovanews.ru.
But now scientists will have a wider field for experiments - social networks. In the laboratory web algorithms, University of Milan analyzed between 721 million active users of social Facebook. The number of links between them was 69 billion. As a result, according to the data provided by all users of the social network share only 4.74 level communication. And if people live in one country, then the connection is reduced to three or four handshakes .