Sensorimotor transformation is the process by the brain first ‘senses’ an object in the world and then issues an ‘action’ command to produce a movement. It so happens that in many parts of the brain, the same neurons are active for sensation and action periods and often in between the two events. Our research focuses on how the same group of neurons can encode multiple dimensions of information (e.g., sensation, action, and cognition) and how neurons receiving these signals can only decode some dimensions but not others. We use electrophysiological (including brain-computer interface) and computational tools to understand the ‘language of the brain’.