Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Cuneus

  • Ronald A. CohenEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_1356

Synonyms

Brodmann area 17

Structure

The term cuneus comes from the Latin term for wedge, which reflects the shape of this occipital brain area. 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 Brodmann area 17. Pyramidal cells in the cuneus (striate cortex) project to extrastriatecortices (Brodmann areas 18 and 19). The cuneus consists of both striatal and extrastriatal visual cortex consisting of five layers. The striatal areas are largely posterior and are idiotypic homomodal (Mesulam’s classification), while the extrastriatal areas contain heterotypic cell types that respond to more complex visual information. The cuneus receives input from the contralateral superior retina corresponding to the lower visual field. From the extrastriatal areas of the cuneus, information is processed through both ventral and...
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References and Readings

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Clinical and Health PsychologyCollege of Public Health and Health Professions, University of FloridaGainesvilleUSA
  2. 2.Center for Cognitive Aging and MemoryMcKnight Brain Institute, University of FloridaGainesvilleUSA