The left cerebral hemisphere was affected in four individuals, and the right hemisphere was injured in the other two subjects. An arched mass of white matter, containing nerves, that connects the two halves of the brain or hemispheres, interconnecting the neocortex. If it is cut surgically, the two halves can have difficulty communicating with one another. The purpose of this study is to determine whether transsexualism has biological correlates in brain anatomy. This structure is the corpus callosum.
Article has a photo of a brain with an indicator for the corpus callosum.
A sampling of the electrical activity of the cortex, recorded by electrodes placed on specific areas of the scalp. It records alpha and beta rhythms. Large amplitude spike and waves, for example, could indicate epilepsy, while slow waves may indicate brain damage. In EEG, many electrodes are put on the scalp and the ears, and they record the change of voltage of cerebral neuronal discharge. It is often performed in patients with epilepsy, head trauma, and with disturbed consciousness.