T. Bullock. (xx xx 1997)Abstract: Partly motivated by his increasing brushes with psychosis, by the early 1970s the science fiction author Philip K. Dick was struggling with increasing doubts over the nature of reality and personal identity. Perhaps unsurprisingly, characters with unstable worlds and existential doubts are a familiar focus of his work. Dick was interested in more than just description however, and often used his novels to explore personal theories of existence. During his research, he discovered the work of Roger Sperry, who had rocked the foundations of neuroscience by discovering that when separated, the hemispheres of the brain seemed, at least to some degree, independently conscious. Worried about his own perception of reality, Dick considered that this could explain his increasing feelings of alienation and self-detachment. These reflections resulted in A Scanner Darkly, a partly autobiographical near-future novel that remains an incisive commentary on society, psychosis and the brain. (cholesky 2009-01-11 15:45:47).