NCIt definition : A convolution located on the convex side of both cerebral hemispheres, anterior to
the post central gyrus and parallel to the central sulcus, which separates the pre
and post central gyri; much of the primary motor cortex corresponds to this gyrus.;
Alternative definition : CDISC: A ridge on the convex side of both cerebral hemispheres, anterior to the postcentral
gyrus and parallel to the central sulcus, which separates the pre- and postcentral
gyri.;