by Neuroscience News
Young neurons (green) decrease in the human hippocampus across the lifespan, vs more mature neurons (red). NeuroscienceNews.com image is credited to Alvarez-Buylla lab / UCSF. |
Although observed in other species, researchers report hippocampal neurogenesis does not persist through adult life in humans. Researchers say human hippocampal neurogenesis is not detectable in the adult brain.
Nerve cells (red) in the hippocampus. (Thomas Deerinck, NCMIR/SPL) |
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The birth of neurons in the brain’s memory centre seems to stop after childhood — a finding that could overturn 20 years of conventional thought. If confirmed, the results would dampen hopes that the brain’s ability to generate new neurons could be harnessed to treat neurodegenerative diseases such as Alzheimer’s and Parkinson’s.
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