The brain is the most complex organ in the human body, and despite decades of research we still have a lot to learn about it. Its main task is to process the information it receives and to convert it into reactions to our environment. With all its complexity it is very difficult to study, so scientists are building simpler versions, or models, of the brain using computers in an effort to understand it. Join Tomás as he helps us understand these models that one day may help us build a brain.