Thalamocortical connections of rat posterior parietal cortex

Neurosci Lett. 1992 Aug 31;143(1-2):237-42. doi: 10.1016/0304-3940(92)90273-a.


The neuronal connections of rat posterior parietal cortex (PPC) have been examined using retrograde fluorescent axonal tracers. We have found that PPC receives thalamic input predominantly from the lateral posterior and lateral dorsal nuclei, and not from the ventrobasal nucleus, which projects to the rostrally adjacent hindlimb cortex, or from the dorsal lateral geniculate nucleus, which projects to the caudally adjacent visual association area. PPC has reciprocal corticocortical connections with medial agranular cortex and orbital cortex; together, these three cortical areas may function as a network for directed attention in rats.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Afferent Pathways / anatomy & histology
  • Amidines
  • Animals
  • Attention / physiology
  • Brain Mapping
  • Efferent Pathways / anatomy & histology
  • Fluorescent Dyes
  • Parietal Lobe / anatomy & histology*
  • Parietal Lobe / physiology
  • Rats / anatomy & histology*
  • Spatial Behavior
  • Stilbamidines*
  • Thalamus / anatomy & histology*
  • Thalamus / physiology


  • 2-hydroxy-4,4'-diamidinostilbene, methanesulfonate salt
  • Amidines
  • Fluorescent Dyes
  • Stilbamidines
  • diamidino compound 253-50