layers of the neocortex

Structure: The 6 layers of the neocortex: 1) molecular layer (plexiform or tangential layer) a) contains a feltwork of horizontal axons & dendrites b) relatively rare Cajal-Retzius cells c) a poorly-defined class of small, nonspiny, nonpyramidal cells d) no pyramidal cells 2) corpuscular layer (dysfibrous or extragranular layer) a) small pyramidal cells b) nonpyramidal cells, such as small basket cells 3) pyramidal layer (suprastriate or external pyramidal layer) a) medium-sized pyramidal cells b) nonspiny, nonpyramidal cells such as larger basket cells, chandelier cells & double bouquets 4) granular layer (internal granular layer or external band of Baillarger) a) narrow, tightly packed layer b) spiny, nonpyramidal cells (excitatory interneurons) c) neurogliaform cells 5) ganglionic layer (internal pyramidal or interstriate layer, or internal band of Baillarger) a) large pyramidal cells b) output layer of neocortex 6) spindle layer (multiform, infrastriate of fusiform layer) a) regular & inverted pyramidal cells b) Martinotti cells

References

Clarke, D., UCLA Dept of Neurobehavior