Number of neocortical neurons

Range ~2×10^10 neurons/neocortex
Organism Human Homo sapiens
Reference Drachman D (2005). "Do we have brain to spare?".Neurology 64 (12): 2004–5.doi:10.1212/01.WNL.0000166914.38327.BB. p.2004 left column top paragraphPubMed ID15985565
Primary Source Pakkenberg B, Pelvig D, Marner L, et al. Aging and the human neocortex. Exp Gerontol 2003 38: 95–99.PubMed ID12543266
Method Stereologic studies
Comments p.2004 left column top paragraph:"Within the liter and a half of human brain, stereologic studies estimate that there are approximately 20 billion neocortical neurons, with an average of 7,000 synaptic connections each (primary source)."
Entered by Uri M
ID 112054