layers of the neocortex

^[1]

Structure

The 6 layers of the neocortex:

molecular layer (plexiform or tangential layer)
- contains a feltwork of horizontal axons & dendrites
- relatively rare Cajal-Retzius cells
- a poorly-defined class of small, nonspiny, nonpyramidal cells
- no pyramidal cells
corpuscular layer (dysfibrous or extragranular layer)
- small pyramidal cells
- nonpyramidal cells, such as small basket cells
pyramidal layer (suprastriate or external pyramidal layer)
- medium-sized pyramidal cells
- nonspiny, nonpyramidal cells such as larger basket cells, chandelier cells & double bouquets
granular layer (internal granular layer or external band of Baillarger)
- narrow, tightly packed layer
- spiny, nonpyramidal cells (excitatory interneurons)
- neurogliaform cells
ganglionic layer (internal pyramidal or interstriate layer, or internal band of Baillarger)
- large pyramidal cells
- output layer of neocortex
spindle layer (multiform, infrastriate of fusiform layer)
- regular & inverted pyramidal cells
- Martinotti cells