In
neuroanatomy, the parieto-occipital sulcus (also called the parieto-occipital fissure) is a deep
sulcus in the
cerebral cortex that marks the boundary between the
cuneus and
precuneus, and also between the
parietal and
occipital lobes. Only a small part can be 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 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.
Function
The parieto-occipital lobe has been found in various neuroimaging studies, including
PET (positron-emission-tomography) studies,[1][2][3][4] and
SPECT (single-photon emission computed tomography) studies,[5][6] to be involved along with the
dorsolateral prefrontal cortex during
planning.
Gallery
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.
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Owen, Adrian M.; Doyon, Julien; Petrides, Michael; Evans, Alan C. (1996). "Planning and Spatial Working Memory: a Positron Emission Tomography Study in Humans". European Journal of Neuroscience. 8 (2): 353–364.
doi:
10.1111/j.1460-9568.1996.tb01219.x.
PMID8714706.
S2CID21770063.