Neurology is a branch of medicine that deals with the study and treatment of disorders of the nervous system. The nervous system is a complex network of nerves, cells, and tissues that regulate and coordinate the functions of the body. It includes the brain, spinal cord, and peripheral nerves, and controls everything from movement and sensation to thought and emotion. Neurologists are medical doctors who specialize in the diagnosis and treatment of conditions related to the nervous system. They have extensive training in the anatomy, physiology, and pathology of the nervous system, and are experts in the diagnosis and management of neurological disorders.