Parieto-occipital sulcus

Parieto-occipital sulcus
Fig. 726: Lateral surface of left cerebral hemisphere, viewed from the side.
Fig. 727: Medial surface of left cerebral hemisphere.
Details
Identifiers
Latin	sulcus parietooccipitalis, fissura parietooccipitalis
NeuroNames	hier-33
NeuroLex ID	Parieto-occipital sulcus
TA	A14.1.09.108
FMA	83754
Anatomical terms of neuroanatomy []

Only a small part of the parieto-occipital sulcus, or parietooccipital fissure is seen on the lateral surface of the hemisphere, its chief part being on the medial surface.

The lateral part of the parieto-occipital sulcus (Fig. 726) is situated about 5 centimeters (cm) in front of the occipital pole of the hemisphere, and measures about 1.25 cm. in length.

The medial part of the parieto-occipital sulcus (Fig. 727) runs downward and forward as a deep cleft on the medial surface of the hemisphere, and joins the calcarine fissure below and behind the posterior end of the corpus callosum. In most cases it contains a submerged gyrus. The parieto-occipital sulcus marks the boundary between the cuneus and precuneus, and also between the parietal and occipital lobes.

The parieto-occipiatal lobe has been found in various neuroimaging studies, including PET (positron-emission-tomography) studies, and SPECT (single-photon emission computed tomography) studies, to be involved along with the dorsolateral prefrontal cortex during planning.

Animation of left cerebral hemisphere. Parieto-occipital sulcus shown in red.

Medial surface of right hemisphere. Parieto-occipital sulcus labeled at top right as "*"

Medial surface of left hemisphere. Parieto-occipital sulcus visible at top left.

Human brain dissection video (1 min 52 sec). Demonstrating location of parieto-occipital sulcus of left cerebral hemisphere.

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)