a study in munich is trying to find answers to these questions head of anesthesiology care hard schneider is testing what happens in the brain when consciousness is lost under anesthesia. so far we know very little about the brain mechanisms involved in this process. magnetic resonance imaging provides brain scans of test persons while they are awake and under general anesthesia. so where is consciousness located. yeah we anesthesiologists have a very simplistic idea of consciousness. for us patients are unconscious when they're unresponsive or in react or. what i call a consciousness component is basically a reaction to stimulus. or conscious reaction to stimuli. but for psychologists or social scientists this has nothing to do with consciousness. the