cuneus

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      The cuneus (from Latin 'wedge'; pl.: cunei) is a smaller lobe in the occipital lobe of the brain. The cuneus is bounded anteriorly by the parieto-occipital sulcus and inferiorly by the calcarine sulcus.


      Function


      The cuneus (Brodmann area 17) receives visual information from the same-sided superior quadrantic retina (corresponding to contralateral inferior visual field). It is most known for its involvement in basic visual processing. Pyramidal cells in the visual cortex (or striate cortex) of the cuneus, project to extrastriate cortices (BA 18,19). The mid-level visual processing that occurs in the extrastriate projection fields of the cuneus are modulated by extraretinal effects, like attention, working memory, and reward expectation.


      Clinical research


      In addition to its traditional role as a site for basic visual processing, gray matter volume in the cuneus is associated with better inhibitory control in bipolar depression patients.
      Pathologic gamblers have higher activity in the dorsal visual processing stream including the cuneus relative to controls.


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      References


      General sources

      Further reading

      Sherrington, Charles Scott (1911). "Brain" . In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 4 (11th ed.). Cambridge University Press. pp. 391–413. See p. 397 for reference to "cuneus".


      External links

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    Cuneus - Wikipedia

    The cuneus (from Latin 'wedge'; pl.: cunei) is a smaller lobe in the occipital lobe of the brain. The cuneus is bounded anteriorly by the parieto-occipital sulcus and inferiorly by the calcarine sulcus.

    Cuneus | Radiology Reference Article | Radiopaedia.org

    Jul 23, 2019 · Blood supply to the cuneus is via the calcarine artery and parieto-occipital artery. The proportion varies from person to person and either artery can be the major source of perfusion 2. Function. Fibers of the superior optic radiation corresponding to the inferior quadrant of the visual field synapse on the cuneus 3.

    The cuneus is a wedge-shaped cortical area located in the medial occipital gyri, superior to the calcarine fissure and posterior to the parietal–occipital fissure. The cuneus is part of the occipital lobe, corresponding to Broadmann area 17.

    Cuneus - e-Anatomy - IMAIOS

    The cuneus, also known as the cuneate gyrus, is a wedge-shaped area in the back part of the brain called the occipital lobe. You can see it on the inner surface of the occipital lobe, where it is surrounded by the parietooccipital sulcus in the front and the calcarine sulcus below and behind it.

    Cuneus - an overview | ScienceDirect Topics

    The cuneus is a region of the brain that is part of the medial parietal cortex and is involved in controlling voluntary attention shifts, episodic-related retrieval tasks, and linking personal identity with past experiences.

    Cuneus - Amateur Entomologists' Society (AES)

    The cuneus is a triangular-shaped region at the distal end of the fore wing in some species of Hemiptera. The presence/absence and shape of the cuneus, if it is present, is an important diagnostic feature and used to help entomologists identify individual species of Hemiptera.

    Cuneus Definition & Meaning | Merriam-Webster Medical

    The meaning of CUNEUS is a convolution of the mesial surface of the occipital lobe of the brain above the calcarine sulcus that forms a part of the visual area.

    Cuneus | definition of cuneus by Medical dictionary

    Looking for online definition of cuneus in the Medical Dictionary? cuneus explanation free. What is cuneus? Meaning of cuneus medical term. What does cuneus mean?

    Anatomy and White Matter Connections of the Lingual Gyrus and Cuneus

    Background: The medial occipital lobe, composed of the lingual gyrus and cuneus, is necessary for both basic and higher level visual processing. It is also known to facilitate cross-modal, nonvisual functions, such as linguistic processing and …

    Cuneus - an overview | ScienceDirect Topics

    The right cuneus is a subregion mainly located in the right dorsal occipital stream, which has been extensively documented as subserving visuo-spatial/motion functions in sighted individuals. From: NeuroImage: Clinical, 2019