Number of neurons and synapses in a cubic millimeter of cortex

Range ~90,000 neurons: ~700,000,000 synapses 1/mm^3
Organism Mouse Mus musculus
Reference Faisal AA, White JA, Laughlin SB. Ion-channel noise places limits on the miniaturization of the brain's wiring. Curr Biol. 2005 Jun 21 15(12):1143-9. Supplemental material p.S6 left column 2nd paragraphPubMed ID15964281
Primary Source Braitenberg, V., and Schu¨ z, A. (1998). Statistics and Geometry of Neuronal Connectivity, Second Edition (Berlin: Springer-Verlag).
Comments "A cubic millimeter of mouse cortex contains about 9×10^4 neurons, 7×10^8 synapses, and 4 km of local, unmyelinated cabling (axon collaterals) down to 0.1µm diameter (0.3µm average diameter)[primary source]."
Entered by Uri M
ID 109245