Here is a video of a guy using the MindWave in conjunction with processing. The MindWave is a device that measures brainwave signals and multiple mental states. Different patterns of neural interaction are characterized by different amplitudes and frequencies. By filtering out some of the ambient frequencies of the body, this device amplifies raw brainwave signals. More specifically, this device monitors the attention levels of a person as they interact with math, memory and pattern recognition. The guy in this video is plugging the data from the MindWave into a program written in Processing. The product is a graphical representation of the data that responds in real time to the changes in brain activity.