The brain's function has been an enigma throughout history, but in the last few decades, significant advances have been made in our understanding. In this course, we employ the psychological perspective of neuroanatomy and neurophysiology to develop an understanding of how the brain produces thought and behavior. We look at the way neural activity produces our perception of the world, our behavior, our cognition and memory, and our emotional life. We also explore how psychoactive drugs affect these processes and how neural activity produces conscious awareness and plays a role in mental illness and substance use disorders.