Cycles of contraction of the heart muscle directly affect the fact, afraid of what man is. This conclusion came researcher from the Medical school Brighton and Sussex Sarah Garfinkel as a result of the study, which was attended by 20 people, writes The Times of India. As shown by tests, people were frightened more, if their heart rate was at that time more actively, and their blood is actively circulated throughout the body.
Relaxed cardiac muscle makes a person scared. According to the announced theory, heart rate affects the response of the brain relative to frightening events. The experiment participants were shown the terrible pictures, fixing their heartbeat using the connected devices. Volunteers stronger reacted to photograph during contraction of the heart, than during relaxation. That's why the pictures were better isolated at the time of contraction of the heart muscle.
However, it was held scanning amygdala of the brain. This brain region is also called the root of all emotions. Previously, it was believed that the brain affects the response of the heart during fright. But most likely, there is also the opposite effect, as the brain and heart constantly interact with each other, thus reducing the severity of fear and changing emotions.