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How many billions of neurons are found in the brain?

Nature versus nurture

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Open access•Journal Article•DOI Cellular Scaling Rules for the Brains of Marsupials: Not as “Primitive” as Expected Sandra E. Dos Santos, Jairo Porfirio, Felipe Barros da Cunha, Paul R. Manger, William Corrêa Tavares, Leila Maria Pessôa, Mary Ann Raghanti, Chet C. Sherwood, Suzana Herculano-Houzel - Show less +8 more 27 Jan 2017-Brain Behavior and Evolution 347 Citations	We show that brain structure mass scales with numbers of nonneuronal cells, and numbers of cerebellar neurons scale with numbers of cerebral cortical neurons, comparable to what we have found in eutherians.
Journal Article•DOI Wiring of the brain. Neil Gordon 01 Jan 2008-European Journal of Paediatric Neurology 16 Citations	The wiring of the brain is almost as important as the number of neurons in the brain at birth, as this will ensure the preservation of those of most use.
Journal Article•DOI Neurogenesis in the 3-month-old rat visual cortex. Michael S. Kaplan 10 Jan 1981-The Journal of Comparative Neurology 216 Citations	Thus, it has now been confirmed that relatively small labeled neurons and their synapses are found in at least 3 brain regions (olfactory bulb, dentate gyrus, and visual cortex) in a normal adult rodent.
Journal Article•DOI Gene expression profiles in microdissected neurons from human hippocampal subregions. Jorge Torres-Munoz, Corina van Waveren, Martha G Keegan, Richard J. Bookman, Carol K. Petito - Show less +4 more 23 Aug 2004-Molecular Brain Research 59 Citations	The results confirm the ability to examine gene expression profiles in microdissected neurons from human autopsy brain.
Journal Article•DOI Neurons from fetal rat brain in a new cell culture system: a multidisciplinary analysis. Earl W. Godfrey, Phillip G. Nelson, Bruce K. Schrier, Anthony C. Breuer, Bruce R. Ransom - Show less +4 more 06 Jun 1975-Brain Research 124 Citations	This new approach will allow, in culture, detailed multidisciplinary analyses of individual neurons and small networks of neurons from the mammalian brain.

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