David J. Linden

In his latest book, neuroscientist David Linden explains the science of touch. He tells Fresh Air how pain protects, why fingertips are so sensitive and why you can't read Braille with your genitals.

In his new book, The Compass of Pleasure, neuroscientist David Linden maps out the brain's relationship with pleasure and addiction. From junk food to sex to gambling, Linden explains that addictions are actually rooted in the brain's inability to feel pleasure.