The Tech That Reads Your Mind – How EEG Can Train Your Brain

Our brain communicates electrochemically, and we can pick up those electrochemical signals using an EEG, an electroencephalograph. We do it by putting EEG electrodes on the head, and as our neurons fire electrical information back and forth, the sum total of that electrical activity can be detected from the surface of the head. In the same way that you can put an EKG on your heart and hear the heart's rhythm, you can put an EEG on the head and hear the brain's electrical rhythm. And this can give you really important information about the brain. It can tell you when it's functioning normally, and it can tell you when you're in different states.