Paracentral lobule

Brain: Paracentral lobule
Medial surface of left cerebral hemisphere. (Paracentral lobule is shown in orange.)
Medial view of a halved human brain (lobulus paracentralis labeled at top center, at border between yellow and red)
Latin	lobulus paracentralis
Gray's	subject #189 822
NeuroNames	ancil-404

The more medial part of the superior frontal gyrus is distinguished as the paracentral lobule (also known as the George Association Area^[1]). It is continuous with the precentral and postcentral gyri of the lateral surface.

It includes portions of the frontal and parietal lobes:^[2]

• The anterior portion of the paracentral lobule is part of the frontal lobe and is often referred to as the supplementary motor area.

• The posterior portion is considered part of the parietal lobe.

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.

Gallery

• 

  Animation. Paracentral lobule is shown in red.

• 

  Cingulate sulcus.

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  Marginal sulcus.

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  Paracentral sulcus.

• 

  Central sulcus on the medial surface. It divides paracentral lobule into the anterior part and the posterior part.

References

External links

• http://psychology.uwo.ca/fmri4newbies/PrimeronCorticalSulci.html#Cingulate%20sulcus

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