we corroborated this later with elektra physiological measurements, skin response, the amount you sweatle listening or viewing, correlated with the musical content of the peace. -- piece. >> maybe i should pay more attention to my sweating. >> to the extent that your body movements are evocative of time and place, feelings, they are naturally becoming part of the musical stream, it would seem. >> right. interesting. you and i were speaking the other day, talking about the word he motion, which includes the word motion. -- emotion, which includes the word motion. dance music literally makes people get up and move. a lot of time, music is more contemplative, moves people in different ways. the matter with your physical move it or not, something is moving. maybe you can explain what is going on in the brain, going through that emotional experience, listening or playing music. >> on the emotional side, there are a couple of clues. cognitive neuroscience is in its industry here try to sort of music. -- in fancy here trying to sort out music. there is a well-known pleasure center in the brain