Genetics and psychologists at the University of Georgia found that the action of a specific gene in the human body as a result of epigenetic regulation helps us to recognize other people’s emotions. The scientific article published in the journal Proceedings of the National Academy of Sciences.
This is the conclusion, scientists have made in the course of the study. They gathered in 120 subjects saliva sample for genetic testing, in which the activity of the gene was established Oxm
The researchers collected saliva samples from more than 120 participants to carry out genetic tests to determine gene activity OXT (oxyntomodulin). This hormone is responsible for the synthesis of oxytocin, which is associated with human relationships, increase trust and a sense of tranquility close to the partner. However, in some people this hormone may not work at “full power”. This phenomenon is called methylation genes.
In addition to the genetic analysis of saliva, a group of volunteers took a number of texts to recognize emotions. The researchers showed subjects a short video with the image of people’s faces, changing from neutral to any other. As soon as the subject learned emotion, he could press the alarm button.
The final step was the testing of brain scanning procedure using MRI. During the scan, all sorts of people were asked to solve the problem. When people pondered decision MRI to visualize the activity of brain regions associated with social and cognitive functions
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As a result, all of the experiments scientists have been able to establish that people whose Oxm gene was the least active, there are difficulties with the rapid recognition of emotions. It is noted that this is characteristic of autism spectrum disorders. These participants also showed a characteristic decrease in activity in the relevant areas of the brain, as well as the decrease in the proportion of gray matter in the fusiform gyrus, responsible for face recognition.
Scientists believe that the new discovery, associated with the process of methylation, will help in developing methods treating social disorders.
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