A new study points toward lifelong neuron formation in the human brain's hippocampus, with implications for memory and disease. From a report: For decades, scientists have debated whether the birth of new neurons -- called neurogenesis -- was possible in an area of the brain that is responsible for learning, memory and mood regulation. A growing body of research suggested they could, but then a Nature paper last year raised doubts. Now, a new study published today in another of the Nature family of journals -- Nature Medicine -- tips the balance back toward "yes." In light of the new study, "I would say that there is an overwhelming case for the neurogenesis throughout life in humans," Jonas Frisen, a professor at the Karolinska Institute in Sweden, said in an e-mail. Frisen, who was not involved in the new research, wrote a News and Views about the study in the current issue of Nature Medicine.
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