A comparative light microscopic investigation on geniculo-cortical relay neurons in rat, tree shrew and cat

Z Mikrosk Anat Forsch. 1982;96(1):65-78.


The morphology of geniculo-cortical relay neurons (GCR-neurons) of tree shrew, rat and cat differs intraspecifically and interspecifically from each other. Intraspecific differences in the cat have been explained functionally by the W-, X-, and Y-characteristics of cells (Wilson et al. 1976). Analogous morpho-functional correlations may also explain the morphological differences in tree shrew and rat. The interspecific differences in the morphology of GCR-neurons seem to be closely correlated to the levels of visual specialization in the three species in which the rat represents a basal developmental stage.

Publication types

  • Comparative Study

MeSH terms

  • Animals
  • Cerebral Cortex / cytology
  • Cerebral Cortex / physiology*
  • Geniculate Bodies / cytology
  • Geniculate Bodies / physiology*
  • Neurons / cytology
  • Neurons / physiology*
  • Rats
  • Species Specificity
  • Staining and Labeling
  • Tupaiidae