Psychosis is a highly misunderstood condition. In this talk, Paul illustrates the condition's complexity, taking apart how our brains perceive reality by reinventing illusions around us. If perception is just a form of controlled hallucination, what does that make hallucination?

Paul Fletcher is the Bernard Wolfe Professor of Health Neuroscience at the Department of Psychiatry in Cambridge, and works at the Behavioural and Clinical Neuroscience Institute.

This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx