"A picture says more than a thousand words." This is even more applicable to facial expressions as part of human body language since they are more than just "a picture". They change every second and say so much about each individual. Facial expression is so variable and individually unique and reacts spontaneously in fractions of second. As the strongest non-verbal communication instrument, facial expressions are an honest mirror of inner emotions and help classify what has been said. Depending on the facial expression, an identical sentence is interpreted very differently by another person. Even without verbal interaction, a lot can be read from the facial expressions. The impulses from the brain are transmitted by the facial nerve, which plays a central role in the everyday communication. If it is intact, it is the non-verbal channel of emotions. If it is damaged, however, not only the exterior is distorted, but so is the emotional communication. Since man lives with his fellow human beings in a constant verbal and non-verbal exchange (according to Paul Watzlawick "One cannot not communicate!"), the facial nerve plays an essential role.