Neurochemistry is the study of the chemical processes and substances that occur within the nervous system. This field of research focuses on understanding how neurotransmitters, hormones, and other chemical messengers impact the structure and function of the brain and nervous system. By investigating the complex interplay of chemicals in the brain, neurochemists aim to unravel the molecular mechanisms underlying neurological diseases, behavior, cognition, and emotions. This research area is crucial for advancing our understanding of brain function and for developing new therapies for various neurological disorders.