What is your brain made of? What is a thought? How do you remember? What happens when you dream? Understanding your brain lifts the lid on what goes on inside the human head to answer these and other mind-boggling questions. Find out about the pulses of electricity which flash through your brain at high speeds, uncover the trickery of optical illusions, look into the secret world of your unconscious and unravel the mysteries of hypnosis. Look inside to find out more about these and other brain-baffling phenomena.