Researchers have discovered that a 'Facebook feature' in the brain determines what kind of social life a person has, one which is based on the size of an almond-shaped group of nuclei in the human brain.
According to researchers at the Massachusetts General Hospital in Boston, the study on 58 volunteers concluded that a larger amygdala results in a bigger and complex network of friends and colleagues.
Prior to the research, the amygdala, which is located in the temporal lobe of the brain, was associated with empathy and fear responses.
For the research, Professor Lisa Feldman, who headed the study, asked the volunteers aged between 19 to 83 years of age, to fill up a specially designed questionnaire in order to sample their social lives and the size of their friends' network.
After the questionnaire, researchers carried out Magnetic Resonance imaging scans on the volunteers in order to scan their brain structures and it was found that people with wide and complex network of friends had large amygdalaes.
“We found that amygdala volume correlates with the size and complexity of social networks in adult humans. These findings indicate that the amygdala is important in social behaviour,” the researchers said.