Build A Lie Detector Using Lego Mindstorm

Galvanic Skin Response (GSR) refers to the changing of electrical skin resistance due to psychological condition. Psychological stress tends to make the sweat glands more active and this lowers the skin’s resistance. Michael figured out a way to use his LEGO MINDSTORMS NXT to measure this. He discuses the theory and includes several experiments you can carry out. <via Zedomax>
