From fear to panic. Yesterday I listened to a radio program about the fear, what it is and how people change the behavior when frightened. Of course that emotion is a reaction to the external stimulus that reach the brain via many senses of the human body. May be, the principal is the sight. We can be easily frightened by an image of a wild beast showing out its teeth, or when we see a suspicious shadow that seems to follow us while we walk in a lonely, narrow street in an unknown town during the night. These are just two stereotypes of frightening scenes. But think deeply what could happen if you also heard a lion's roar in the first case and the sound of footsteps in the other. You'd be incredibly scared of that. All our body sensors can receive input and deliver it to the brain to be analyzed and used as bricks to create a real, or at least considered real, situation although it isn't properly risky. The brain, fake or true is the situation, reacts changing the mood, the speed of the breath, the heartbeat. You may even begin to sweat and later on you may also cry and scream. This evolution in human emotional reactions to frightening is quite graduated from fear to panic through terror. Most of that is managed by amigdala, a special part of the brain. I don't know if the name is right, because the program was broadcast in English. Many experiments had shown that who has amigdala disease or some specific amigdala disorder, don't have any fear and feel good even in some real risky situations.