ABSTRACT
The Society for Neuroscience is a professional organization that was formed in 1970 with around 500 charter members. In ancient Egypt and Greece, as well as in ancient China, there were differences of opinion as to which organ of the body was the most important in so far as the mental capacities of the individual were concerned. The human nervous system is divided into two basic components: the central nervous systems (CNS) and the peripheral nervous systems (PNS). Additional structures in the brain are the amygdala and hippocampus. Both are part of a collection of structures called the limbic system, an area involved in the regulation of emotion. The brain and spinal cord communicate to the rest of the body via the PNS, which consists of 31 pairs of spinal nerves and 12 pairs of cranial nerves. Computerized tomography (CT) scans involve putting a person's head in a kind of tube which passes an X-ray beam through the head.
