A group of scientific disciplines that study the nervous system, its functions, structure, and development, from tiny neurons to complex human behavior. This field includes studies of the brain, spinal cord, and peripheral nervous system, as well as cognitive psychological functions such as memory, attention, and perception. Neuroscience also studies neurological and psychological disorders such as epilepsy, Alzheimer’s disease, depression, and anxiety to understand their causes and develop treatments. Neuroscience is unique in that it combines biology, chemistry, psychology, and medicine to explain how the brain and nervous system work to maintain physical and psychological balance.