Cuneus

Cuneus
Brain: Cuneus
Gray727 Cuneus.png
Medial surface of left cerebral hemisphere. (Cuneus visible at left as orange.)
Gehirn, medial - beschriftet lat.svg
Medial view of a halved human brain
Artery posterior cerebral artery
NeuroNames hier-139
Sagittal MRI slice with the cuneus shown in red.
Sagittal MRI slice with the cuneus shown in red.
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 medieval 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]

Gallery

Position of cuneus(red) of left cerebral hemisphere.


References

  1. ^ 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:10.1177/0269881107082955. PMID 18308812. 
  2. ^ 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:10.1016/j.biopsych.2005.04.037. PMID 15993856. 

 This article incorporates text from a publication now in the public domainChisholm, Hugh, ed (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press. 



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  • cuneus — CUNÉUS s.n. (biol.) Circumvoluţie în formă de pană, situată pe faţa internă a lobului occipital. [< lat. cuneus – pană]. Trimis de LauraGellner, 13.09.2007. Sursa: DN  CUNÉUS s. n. circumvoluţie în formă de pană, pe faţa internă a lobului… …   Dicționar Român

  • Cunĕus — (lat.), 1) der Keil; daher Sprüchwort: Cuneus cuneum trudit, ein Keil treibt den andern; 2) (Caput porcinum, gr. Embolon), keilförmige Schlachtordnung, die, an der Fronte schmal beginnend, immer mehr u. mehr an Breite zunahm; bes. zum… …   Pierer's Universal-Lexikon

  • Cunĕus — (lat., »Keil«), die keilförmige Schlachtordnung der Alten, die, an der Front schmal beginnend, immer mehr an Breite zunahm und besonders zum Durchbrechen der feindlichen Linien angewendet ward, von den römischen Soldaten scherzweise caput… …   Meyers Großes Konversations-Lexikon

  • Cuneus — Cunĕus (lat.), Keil; keilförmige Schlachtordnung …   Kleines Konversations-Lexikon

  • cuneus — Región de la corteza cerebral en forma de cuña, situada entre los surcos parietooccipital y poscalcarino. Diccionario Mosby Medicina, Enfermería y Ciencias de la Salud, Ediciones Hancourt, S.A. 1999 …   Diccionario médico

  • Cuneus —    • Cunĕus,        1. клинообразное отделение помещения для зрителей в театре, амфитеатр и цирк, образованное лестницами и проходами, которые шли от самого нижнего до самого верхнего ряда сидений; κερκίς, см. Theatrum, Театр, 4;        2.… …   Реальный словарь классических древностей

  • CUNEUS — I. CUNEUS aliquando totam Theatri machinam apud Romanos denotabat, quam spectatores tenuêre; Cunei enim, quô ligna finduntur (quae propria vocis notio est) formam habebat, scenam versus in acumen desinens, retro latissima. Aliquando peculiarem… …   Hofmann J. Lexicon universale

  • Cuneus — Der Begriff Cuneus (von lat. Keil) bedeutet: einen Teil des Vorderflügels von Wanzen, siehe Hemielytre einen Teil des Occipitallappens im Hirn Strahl des Pferdehufes in der Antike: den Küstenabschnitt zwischen Kap Sacrum (heute Cabo de São… …   Deutsch Wikipedia

  • Cuneus — Le cuneus O6 est un gyrus de la face interne du lobe occipital du cortex cérébral. Il s agit de la circonvolution de la partie supérieure de la face interne du lobe occipital, limitée en avant par le sillon pariéto occipital et en bas pa la… …   Wikipédia en Français

  • cuneus — n. [L. cuneus, wedge] 1. (ARTHROPODA: Insecta) A terminal, more or less triangular segment of the corium of the fore wing. 2. (NEMATA) The ventral arm of the gubernaculum …   Dictionary of invertebrate zoology

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