For most people the concept of anaesthetic is routine, it is just something that doctors give to people undergoing a medical procedure and everything will be normal again in a few hours. For some people though the injuries they sustain are so life-threatening that the body cannot experience any stress during recovery and a medically induced coma is needed to keep the patient safe. This is common practice in intensive care units all around the world and saves the lives of those who otherwise would not be able to cope with almost any stimulus or activity. This episode is talking about what happens to the brain during that time. How does the brain handle being in an environment where nothing is happening, no TV shows to watch, no streets to walk down or friends to talk to? Our brain craves experience so what can we learn about the brain's response to extended periods of no experience?