Physiological psychology is a subdivision of
behavioral neuroscience (biological psychology) that studies the neural mechanisms of
perception and behavior through direct manipulation of the brains of nonhuman animal subjects in
controlled experiments. This field of psychology takes an empirical and practical approach when studying the brain and
human behavior. Most scientists in this field believe that the mind is a phenomenon that stems from the nervous system. By studying and gaining knowledge about the mechanisms of the nervous system, physiological psychologists can uncover many truths about human behavior. Unlike other subdivisions within biological psychology, the main focus of physiological psychological research is the development of theories that describe brain-behavior relationships.