The way these "thoughts" are recorded is with an Electroencephalogram (EEG) sensor, which measures the voltage fluctuations from ionic current within the dog's brain. Small EEG censors are placed within a plastic headset. As the electrical signals in the the dog's brain are recorded, patterns are sought out. These patterns are then analyzed, recorded, and translated into phrases like "This is splendid!" Or "leave me alone" and "who are you?" Even "night-time!"