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Baby Brain Cells

Some mammals have a stock of immature brain cells that play a role in learning and recovery

02 December 2020

Baby Brain Cells

Learning new things and recovering after brain damage alters the way that nerve cells are arranged and wired up – a phenomenon known as plasticity. One way to do this is to make new nerve cells, but this risks interfering with the structures that keep long-term memories safe, particularly in the region of the brain known as the cortex. Larger animals, including humans, tend to achieve plasticity in a different way by reshaping the connections between existing nerve cells, strengthening some and breaking others. Another recently-discovered route is to keep the cortex stocked with immature nerve cells kept in a state of arrested development, like the ones in this image from a sheep’s brain, which can then be triggered to ‘grow up’ when they’re needed. Discovering more about these immature neurons – including whether they exist in humans – could point towards new approaches for treating brain damage or neurodegenerative diseases like dementia.

Written by Kat Arney

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BPoD stands for Biomedical Picture of the Day. Managed by the MRC Laboratory of Medical Sciences until Jul 2023, it is now run independently by a dedicated team of scientists and writers. The website aims to engage everyone, young and old, in the wonders of biology, and its influence on medicine. The ever-growing archive of more than 4000 research images documents over a decade of progress. Explore the collection and see what you discover. Images are kindly provided for inclusion on this website through the generosity of scientists across the globe.

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