Answering questions like 'What happens as our brain performs different tasks?', 'When do we become conscious?', 'How much of my brain can I remove before I would lose my sense of I?', 'Is my cat conscious?', and 'Can a machine ever be conscious or be deemed intelligent?', Marcus du Sautoy and guests ponder consciousness in a performance-lecture combining music, specially conceived visuals, lighting design and interactive experiences. DJ James Holden provides the soundtrack to the evening, a piece of music which is intended to summon a higher state of consciousness in the audience. So, no falling asleep at the back. Part of the 'Wonder: Art and Science on the Brain' series of events devised by the Barbican and the Wellcome Trust.