ABSTRACT
This chapter examines neuropsychology as a source of evidence in the science of consciousness. Neuropsychological patients suffer from damage to some part of their brain. In some patients, the damage wipes out or distorts particular contents of consciousness, leaving subjective experiences transformed in surprising ways. The chapter considers three different lines of evidence from neuropsychology. First, the unity of (visual) consciousness and how it breaks down. Second, the difference between conscious and non-conscious information processing in the brain. Third, self-awareness and how it may be distorted after brain damage. The neuropsychological evidence suggests that every last aspect of our consciousness is completely dependent on activities in particular parts of the brain. Achromatopsia is a disorder where a person who has all his life seen the world in colors suddenly loses color vision completely because of damage in the visual cortex of the brain.
