Operculum (brain)
Encyclopedia
Operculum, derived from Latin, meaning "little lid", refers to the cerebral cortex
on the outside surface of the brain bordering the lateral sulcus
, and the roof and floor of the lateral sulcus. (The back wall of the lateral sulcus is the insula
.) Neuroscience divides the operculum into orbital
, frontal
, parietal
and temporal
regions, after the lobes
they form a part of.
Cerebral cortex
The cerebral cortex is a sheet of neural tissue that is outermost to the cerebrum of the mammalian brain. It plays a key role in memory, attention, perceptual awareness, thought, language, and consciousness. It is constituted of up to six horizontal layers, each of which has a different...
on the outside surface of the brain bordering the lateral sulcus
Lateral sulcus
-External links:* * * http://www.uams.edu/radiology/education/residency/diagnostic/pdf/sylvian_cistern_RSNA2003.pdf...
, and the roof and floor of the lateral sulcus. (The back wall of the lateral sulcus is the insula
Insular cortex
In each hemisphere of the mammalian brain the insular cortex is a portion of the cerebral cortex folded deep within the lateral sulcus between the temporal lobe and the frontal lobe. The cortical area overlying it towards the lateral surface of the brain is the operculum...
.) Neuroscience divides the operculum into orbital
Orbitofrontal cortex
The orbitofrontal cortex is a prefrontal cortex region in the frontal lobes in the brain which is involved in the cognitive processing of decision-making...
, frontal
Frontal lobe
The frontal lobe is an area in the brain of humans and other mammals, located at the front of each cerebral hemisphere and positioned anterior to the parietal lobe and superior and anterior to the temporal lobes...
, parietal
Parietal operculum
The parietal operculum is the portion of the parietal lobe on the outside surface of the brain bordering the lateral sulcus, and the extension of this cortex which forms the posterior ceiling of the lateral sulcus. It contains the secondary somatosensory cortex .-Secondary somatosensory cortex:In...
and temporal
Temporal lobe
The temporal lobe is a region of the cerebral cortex that is located beneath the Sylvian fissure on both cerebral hemispheres of the mammalian brain....
regions, after the lobes
Lobes of the brain
Brain lobes were originally a purely anatomical classification, but have been shown also to be related to different brain functions. The telencephalon , the largest portion of the human brain, is divided into lobes, but so is the cerebellum...
they form a part of.