Environment complexity stimulates visual cortex neurogenesis: death of a dogma and a research career.

Over the past few years, the classic idea that no new nerve cells are born in the adult mammalian brain has finally and conclusively been refuted by the scientific community. Yet, the first indications that neurogenesis occurs in the brain of adult mammals were obtained using light and electron microscopy over two decades ago. Why this went unrecognized is described in a personal account by the researcher who pioneered those studies: Michael Kaplan.