Paracentral lobule
Encyclopedia
The more medial part of the superior frontal gyrus
is distinguished as the paracentral lobule (also known as the George Association Area). It is continuous with the precentral and postcentral
gyri of the lateral surface.
It includes portions of the frontal and parietal lobes:
While the boundary between the lobes, the central sulcus
, is easy to locate on the lateral surface of the cerebral hemispheres, this boundary is often discerned in a cytoarchetectonic manner in cases where the central sulcus is not visible on the medial surface.
Superior frontal gyrus
The superior frontal gyrus makes up about one-third of the frontal lobe of the human brain. It is bounded laterally by the superior frontal sulcus....
is distinguished as the paracentral lobule (also known as the George Association Area). It is continuous with the precentral and postcentral
Postcentral gyrus
The lateral postcentral gyrus is a prominent structure in the parietal lobe of the human brain and an important landmark. It is the location of primary somatosensory cortex, the main sensory receptive area for the sense of touch...
gyri of the lateral surface.
It includes portions of the frontal and parietal lobes:
- The anterior portion of the paracentral lobule is part of the frontal lobeFrontal lobeThe 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...
and is often referred to as the supplementary motor areaSupplementary motor areaThe supplementary motor area is a part of the sensorimotor cerebral cortex . It was included, on purely cytoarchitectonic arguments, in area 6 of Brodmann and the Vogts...
.
- The posterior portion is considered part of the parietal lobeParietal lobeThe parietal lobe is a part of the Brain positioned above the occipital lobe and behind the frontal lobe.The parietal lobe integrates sensory information from different modalities, particularly determining spatial sense and navigation. For example, it comprises somatosensory cortex and the...
.
While the boundary between the lobes, the central sulcus
Central sulcus
-External links:* via the Neuroscience Information Framework...
, is easy to locate on the lateral surface of the cerebral hemispheres, this boundary is often discerned in a cytoarchetectonic manner in cases where the central sulcus is not visible on the medial surface.
External links
- http://psychology.uwo.ca/fmri4newbies/PrimeronCorticalSulci.html#Cingulate%20sulcus