Encyclopedia of Clinical Neuropsychology

Living Edition
| Editors: Jeffrey Kreutzer, John DeLuca, Bruce Caplan

Achromatopsia

  • Sophie Lebrecht
  • Michael J. Tarr
Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-56782-2_1341-2

Synonyms

Short Description or Definition

Following damage to the ventral medial region of the occipital lobe, known as the “color center” of the brain (Bartels and Zeki 2000), patients lose the ability to perceive color and therefore experience the world as varying shades of gray. This disorder is termed cerebral achromatopsia. The loss of color vision in these patients cannot be explained by the photoreceptors typically damaged or absent in patients with other types of color blindness.

Categorization

Cerebral achromatopsia results from bilateral damage to the V4/V4α region of the color center. If patients experience complete ablation of V4, they lose color vision in their entire visual field. However, if patients experience unilateral damage to V4, hemi-achromatopsia ensues, where patients only lose color vision in the contralateral half of their visual field. In less extreme cases, known as...

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References and Readings

  1. Bartels, A., & Zeki, S. (2000). The architecture of the color centre in the human visual brain: New results and a review. The European Journal of Neuroscience, 12(1), 172–193.CrossRefPubMedGoogle Scholar
  2. Bouvier, S. E., & Engel, S. A. (2006). Behavioral deficits and cortical damage loci in cerebral achromatopsia. Cerebral Cortex (New York, N.Y.: 1991), 16(2), 183–191.CrossRefGoogle Scholar
  3. Kanwisher, N., McDermott, J., & Chun, M. M. (1997). The fusiform face area: A module in human extrastriate cortex specialized for face perception. Journal of Neuroscience, 17(11), 4302–4311.PubMedGoogle Scholar
  4. Meadows, J. C. (1974). Disturbed perception of colors associated with localized cerebral lesions. Brain: A Journal of Neurology, 97(4), 615–632.CrossRefGoogle Scholar
  5. Sacks, O. W. (1995). An anthropologist on mars: Seven paradoxical tales. New York: Vintage Books.Google Scholar
  6. Verrey, D. (1888). Hémiachromatopsie Droite Absolue. Conversation Partielle De La Perception Lumineuse Et Des Formes. Ancien Kyste Hémorrhagique De La Partie Inférieure Du Lobe Occipital Gauche. Archives d’ophtalmologie, 8, 289–300.Google Scholar
  7. Werner, J. S., & Chalupa, L. M. (2004). The visual neurosciences. Cambridge, MA: MIT Press.Google Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Visual Neuroscience LaboratoryBrown UniversityProvidenceUSA