Encyclopedia of Color Science and Technology

Living Edition
| Editors: Renzo Shamey

Magno-, Parvo-, and Koniocellular Pathways

Living reference work entry

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DOI: https://doi.org/10.1007/978-3-642-27851-8_278-2



Magno-, parvo-, and koniocellular pathways are the three visual pathways in primates. These pathways are established at the level of the lateral geniculate nucleus (LGN) of the thalamus. They are formed of morphologically distinct cellular layers that receive information from different types of retinal ganglion cells and project to different layers in the primary visual cortex.

Anatomical Considerations

The LGN layers of each of the three visual pathways have a specific cytoarchitectonic structure. The names of the pathways are derived from these structural characteristics [1, 2]. Magnocellular (M) cells have relatively large bodies (lat. Magnus: large), parvocellular (P) cells have smaller bodies (lat. Parvus: small), while koniocellular (K) cells (gr. Konios: dust) are very small.

As can be seen in Fig. 1, structural differences between...
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Authors and Affiliations

  1. 1.School of PsychologyUniversity of AberdeenAberdeenUK

Section editors and affiliations

  • Rolf Kuehni
    • 1
  1. 1.Color research & applicationPennsvilleUSA