Parieto-occipital sulcus
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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
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Animation of left cerebral hemisphere. Parieto-occipital sulcus shown in red.
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Medial surface of right hemisphere. Parieto-occipital sulcus labeled at top right as "*".
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Medial surface of left hemisphere. Parieto-occipital sulcus visible at top left.
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Human brain dissection video (1 min 52 sec). Demonstrating location of parieto-occipital sulcus of left cerebral hemisphere.
References
Public domain This article incorporates text in the public domain from Template:Wikidatathe 20th edition of Gray's Anatomy (1918)
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External links
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- https://web.archive.org/web/20070316043257/http://www2.umdnj.edu/~neuro/studyaid/Practical2000/Q30.htm
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