 As an independent investigator at MIT, his results were largely ignored, by his account, in favor of Pasko Rakic's findings that neurogenesis is limited to pre-natal development.By the late 1990s, a paradigm shift had occurred.The fact that the brain can create new neurons even into adulthood was rediscovered by Elizabeth Gould in 1999, leading it to be one of the hottest fields in neuroscience.