Cingulate Gyrus

The cingulate gyrus is an arched convolution that lies next to the corpus callosum and is separated from it by the sulcus of the corpus callosum. It begins below the rostrum, curves around in front of the genu, extends along the trunk, and then turns downward behind the splenium of the corpus callosum, where it is connected by the narrow "isthmus of the cingulate gyrus" to the parahippocampal gyrus. It is separated from the "medial frontal gyrus" by the cingulate sulcus and from the "precuneus" by the more variable "suprasplenia sulcus." It has many connections with the anterior thalamic nuclei and is often considered to be part of the "limbic system."