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Updated: Apr 7, 2026

A Comparative Approach for Quantitative Cell Counting Studies in Widely Different Mammalian Brains
Published on: January 16, 2026
Adult Neurogenesis in Humans
Olaf Bergmann1, Kirsty L Spalding1, Jonas Frisén1
1Department of Cell and Molecular Biology, Karolinska Institute, SE-171 77 Stockholm, Sweden.
Abstract:
Adult neurogenesis appears very well conserved among mammals. It was, however, not until recently that quantitative data on the extent of this process became available in humans, largely because of methodological challenges to study this process in man. There is substantial hippocampal neurogenesis in adult humans, but humans appear unique among mammals in that there is no detectable olfactory bulb neurogenesis but continuous addition of new neurons in the striatum.

