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The insular cortex is divided by the central sulcus of the insula, into two parts: the anterior insula and the posterior insula in which more than a dozen field areas have been identified. The cortical area overlying the insula toward the lateral surface of the brain is the operculum (meaning lid ).
In human brain anatomy, an operculum (Latin, meaning "little lid") (pl.: opercula), may refer to the frontal, temporal, or parietal operculum, which together cover the insula as the opercula of insula. [1] It can also refer to the occipital operculum, part of the occipital lobe.
The insular cortex is divided into two parts: the larger anterior insula and the smaller posterior insula in which more than a dozen field areas have been identified. The cortical area overlying the insula toward the lateral surface of the brain is the operculum (meaning lid). The opercula are formed from parts of the enclosing frontal ...
The claustrum is a small bilateral gray matter structure (comprising roughly 0.25% of the cerebral cortex) located deep to the insular cortex and extreme capsule, and superficial to the external capsule and basal ganglia.
The salience network is theorized to mediate switching between the default mode network and central executive network. [1] [2]The salience network (SN), also known anatomically as the midcingulo-insular network (M-CIN) or ventral attention network, is a large scale network of the human brain that is primarily composed of the anterior insula (AI) and dorsal anterior cingulate cortex (dACC).
The first depiction of the lateral sulcus (in its top right side) in 1600 in the Tabulae Pictae 112.10 by Girolamo Fabrici d'Acquapendente.. The cerebral cortex was not depicted in a realistic manner until the 17th century with the Sylvian fissure being first accurately painted by Girolamo Fabrici d'Acquapendente in 1600 to provide plates for his Tabulae Pictae.
The extreme capsule is separated from the external capsule by the claustrum, and the extreme capsule separates the claustrum from the insular cortex, and all these lie lateral to the corpus striatum components. [2] [3] From the midline of the brain to the side, the extreme capsule is the outermost from the external capsule and the inner ...
Area 15, like all Brodmann areas, is defined on the basis of cytoarchitecture of the region of cortex. The cortex in area 15 is thinner than in the rest of the insula and temporal lobe.