<P> Many experiments have been done to find out how the brain interprets stimuli and how animals develop fear responses . The emotion, fear, has been hard - wired into almost every individual, due to its vital role in the survival of the individual . Researchers have found that fear is established unconsciously and that the amygdala is involved with fear conditioning . </P> <P> By understanding how fear is developed within individuals, it may be possible to treat human mental disorders such as anxiety, phobia, and posttraumatic stress disorder . </P>

What is the fear center of the brain