Cytoarchitecture
Gray matter is 2 mm thick.
6 layers differing in connections & size, density of cell types.
2 & 4 : receiving layers
- fibers from sensory and association cortex
- thicker in sensory cortex
3, 5 & 6: sending layers
- 3 - association cortex and commissures
- 5 - brainstem and spinal cord
- 6 - thalamus
- thicker in motor cortex
Thalamocortical, corticothalamic & Corticocortical connections (intra and interhemispheric)