John Moe: I was walking around some of your instruments earlier, and I saw something called a "Brainwave Monitor."Elliot Bergman: Yes, this is one of our most unusual instrument and one of our most dangerous as well. It's some sort of quack medical device, and I found it at a thrift store for a couple dollars. It makes a shrieking sound when you plug it into an amplifier.It looks like a little guitar pedal, and you can plug in a diode that you would, theoretically, attach to your head and monitor what's happening in your mind. It's slowly transitioning from medical device to musical instrument.HereMP3: Nomo - Brainwaves (Live On Weekend America)