n., pl. -ne·i (-nē-ī').
The region of the medial aspect of the occipital lobe of each cerebral hemisphere that is bounded by the parieto-occipital sulcus and the calcarine sulcus.
Cuneus
| Medical Dictionary: cu·ne·us |
(kyū'nē-əs)
n., pl. -ne·i (-nē-ī').
n., pl. -ne·i (-nē-ī').
| 5min Related Video: Cuneus |
| Veterinary Dictionary: cuneus |
Pl. cunei [L.] a wedge-shaped lobule on the medial aspect of the occipital lobe of the cerebrum.
- c. ungulae — see frog (2) of the horse's foot.
| WordNet: cuneus |
Note: click on a word meaning below to see its connections and related words.
The noun has one meaning:
Meaning #1:
any shape that is triangular in cross section
Synonyms: wedge, wedge shape
| Wikipedia: Cuneus |
| Brain: Cuneus | ||
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| Medial surface of left cerebral hemisphere. (Cuneus visible at left as orange.) | ||
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| Medial view of a halved human brain | ||
| Artery | posterior cerebral artery | |
| NeuroNames | hier-139 | |
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This article needs additional citations for verification. Please help improve this article by adding reliable references. Unsourced material may be challenged and removed. (November 2009) |
- Cuneus (Latin for "wedge"; plural, cunei) is also the architectural term applied to the wedge-shaped divisions of the Roman theatre separated by the scalae or stairways; see Vitruvius v. 4. This shape also occurred in Middle Age architecture
The cuneus is a portion of the human brain in the occipital lobe.
The cuneus (Brodmann area 17) receives visual information from the contralateral superior retina representing the inferior visual field. It is most known for its involvement in basic visual processing. Pyramidal cells in the cuneus (striate cortex) 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.
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.[1] Pathologic gamblers have higher activity in the dorsal visual processing stream including the cuneus relative to controls.[2]
References
- ^ Haldane M, Cunningham G, Androutsos C, Frangou S (March 2008). "Structural brain correlates of response inhibition in Bipolar Disorder I". Journal of Psychopharmacology 22 (2): 138–43. doi:. PMID 18308812.
- ^ Crockford DN, Goodyear B, Edwards J, Quickfall J, el-Guebaly N (November 2005). "Cue-induced brain activity in pathological gamblers". Biological Psychiatry 58 (10): 787–95. doi:. PMID 15993856.
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 | Cuneo (family name) |
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| calcarine sulcus (anatomy) |
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Copyrights:
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 | Medical Dictionary. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Read more |
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| Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved. Read more |
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| WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. Read more |
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| Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Cuneus". Read more |
