Human consciousness is one of the last great mysteries of science. Astonishing new insights from neuroscience have sparked debates around this phenomenon, and now biologists, neuroscientists, psychologists, and philosophers are working to uncover the mystery behind this very human trait. This introduction succinctly and precisely explains the complex questions and theories. Through impressive experiments and with the help of illustrations and cartoons, the author, who teaches and researches at the University of the West of England, manages to vividly present complex topics such as attention, theories of self, altered states of consciousness, and the effects of drugs or brain injuries on consciousness. Further very brief introductions are also included.