Exposure therapy can make this picture less scary — by altering your brain

Exposure therapy is the practice of exposing people to things they fear in small doses, and it has helped vast numbers of people get over their phobias. But why? Now, a new study has shown that as little as a single session with a tarantula permanently alters the way an arachnophobe's brain works. » 5/25/12 2:00pm 5/25/12 2:00pm