Using technology similar to that found in a lie detector, Corey McCall, a Stanford University doctoral candidate, is creating a video game controller that registers signals about a players respiration, pulse, and perspiration. In Gregory Kovacs’s lab, in association with Texas Instruments, a prototype was constructed.
As a player gets more excited, all of signals the device registers change. Consider physical activity or watching an interesting movie, surprising these have similar autonomous nervous responses. As your interest or involvement increases your respiration rate decreases, pulse increases, and perspiration increases.