David Eagleman talked to the BBC's Tom Bateman about the various theories of what forms consciousness - whether it is a property of the human brain or a "property of the universe".

BBC: The afterlife at the Opera House

The director of the play, Wayne McGregor, told the Today programme's Tom Bateman that he found the book "haunting" and explained that it made him think differently about the very meaning of consciousness.

BBC: The afterlife at the Opera House