The central nervous system (CNS) refers to that part of the nervous system that consists of the brain and spinal cord. It is responsible for the integration of information and coordination of the activities of all the parts of the body. Retina, optic nerve, cranial nerves and olfactory epithelium are also considered as a part of the CNS. The brain is covered and protected by the skull and the vertebrae protect the spinal cord. Brain and spinal cord are enclosed in membranes known as meninges. There are many diseases and conditions associated with CNS. These include alzheimer's disease, parkinson's disease, autoimmune diseases, Krabbe's disease, multiple sclerosis, etc. The brain disorders can be diagnosed through neurological imaging. This book outlines the processes of the central nervous system in detail. It presents researches and studies performed by experts across the globe. The extensive content of this book provides the readers with a thorough understanding of the subject.