The main character of which TV show is based on Paul Ekman, an American psychologist?

Paul Ekman (born February 15, 1934) is an American psychologist and professor emeritus at the University of California, San Francisco who is a pioneer in the study of emotions and their relation to facial expressions. He has created an "atlas of emotions" with more than ten thousand facial expressions and has gained a reputation as the best human lie detector in the world. He was ranked 59th out of the 100 most cited psychologists of the twentieth century. Ekman conducted seminal research on the specific biological correlations of specific emotions, demonstrating the universality and discreteness of emotions in a Darwinian approach.

His work is frequently referred to in the TV series Lie to Me. Dr. Lightman is based on Paul Ekman, and Ekman served as a scientific adviser for the series; he read and edited the scripts and sent video clip-notes of facial expressions for the actors to imitate. While Ekman has written 15 books, the series Lie to Me has more effectively brought Ekman's research into people's homes.