MEDIAL
SURFACE OF THE BRAIN
A, Lobes and functional areas. The cingulate
cortex is labeled the limbic lobe, reflecting its association with other limbic
forebrain structures and with hypothalamic control of the autonomic nervous
system.
Functional areas of the cortex, particularly those involved with
vision, are best seen on a midsagittal view. The sensory and motor cortices
associated with the lower extremities are located medially and are supplied
with blood by the anterior cerebral artery. This region is selectively
vulnerable to specific vascular (anterior cerebral artery infarct) and mass
(parasagittal meningioma) lesions that result in contralateral motor and
sensory deficits of the lower extremity. B, Brodmann’s areas of the
cerebral cortex are labeled on this midsagittal view of the brain. The major
regions are the primary (17) and associative (18, 19) visual cortices, and the
continuation of areas 4 (motor) and areas 3, 1, and 2 (primary sensory) onto
the paracentral lobule in the midline.
