In his work with trauma patients, Dr. Rigg has observed how the brain is constantly reacting to sensory information, generating non-thinking reactions before our intelligent individual human brains are able to process the event and formulate a self-driven response. John is a professional musician, who became a physician in his 40s. 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